Extract and store dependencies from PyPI packages

- Add functions to parse Requires-Dist metadata from wheel and sdist files
- Store extracted dependencies in artifact_dependencies table
- Fix streaming response for cached artifacts (proper tuple unpacking)
- Fix version uniqueness check to use version string instead of artifact_id
- Skip creating versions for .metadata files

CHANGELOG.md

@@ -7,6 +7,43 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 ### Added
+- Added transparent PyPI proxy implementing PEP 503 Simple API (#108)
+  - `GET /pypi/simple/` - package index (proxied from upstream)
+  - `GET /pypi/simple/{package}/` - version list with rewritten download links
+  - `GET /pypi/simple/{package}/{filename}` - download with automatic caching
+  - Allows `pip install --index-url https://orchard.../pypi/simple/ <package>`
+  - Artifacts cached on first access through configured upstream sources
+- Added `POST /api/v1/cache/resolve` endpoint to cache packages by coordinates instead of URL (#108)
+
+### Changed
+- Upstream sources table text is now centered under column headers (#108)
+- ENV badge now appears inline with source name instead of separate column (#108)
+- Test and Edit buttons now have more prominent button styling (#108)
+- Reduced footer padding for cleaner layout (#108)
+
+### Fixed
+- Fixed purge_seed_data crash when deleting access permissions - was comparing UUID to VARCHAR column (#107)
+
+### Changed
+- Upstream source connectivity test no longer follows redirects, fixing "Exceeded maximum allowed redirects" error with Artifactory proxies (#107)
+- Test runs automatically after saving a new or updated upstream source (#107)
+- Test status now shows as colored dots (green=success, red=error) instead of text badges (#107)
+- Clicking red dot shows error details in a modal (#107)
+- Source name column no longer wraps text for better table layout (#107)
+- Renamed "Cache Management" page to "Upstream Sources" (#107)
+- Moved Delete button from table row to edit modal for cleaner table layout (#107)
+
+### Removed
+- Removed `is_public` field from upstream sources - all sources are now treated as internal/private (#107)
+- Removed `allow_public_internet` (air-gap mode) setting from cache settings - not needed for enterprise proxy use case (#107)
+- Removed seeding of public registry URLs (npm-public, pypi-public, maven-central, docker-hub) (#107)
+- Removed "Public" badge and checkbox from upstream sources UI (#107)
+- Removed "Allow Public Internet" toggle from cache settings UI (#107)
+- Removed "Global Settings" section from cache management UI - auto-create system projects is always enabled (#107)
+- Removed unused CacheSettings frontend types and API functions (#107)
+
+### Added
+- Added `ORCHARD_PURGE_SEED_DATA` environment variable support to stage helm values to remove seed data from long-running deployments (#107)
 - Added frontend system projects visual distinction (#105)
   - "Cache" badge for system projects in project list
   - "System Cache" badge on project detail page

backend/app/config.py

@@ -61,8 +61,7 @@ class Settings(BaseSettings):
 
     # Cache settings
     cache_encryption_key: str = ""  # Fernet key for encrypting upstream credentials (auto-generated if empty)
-    # Global cache settings overrides (None = use DB value, True/False = override DB)
-    cache_allow_public_internet: Optional[bool] = None  # Override allow_public_internet (air-gap mode)
+    # Global cache settings override (None = use DB value, True/False = override DB)
     cache_auto_create_system_projects: Optional[bool] = None  # Override auto_create_system_projects
 
     # JWT Authentication settings (optional, for external identity providers)
@@ -108,7 +107,6 @@ class EnvUpstreamSource:
         url: str,
         source_type: str = "generic",
         enabled: bool = True,
-        is_public: bool = True,
         auth_type: str = "none",
         username: Optional[str] = None,
         password: Optional[str] = None,
@@ -118,7 +116,6 @@ class EnvUpstreamSource:
         self.url = url
         self.source_type = source_type
         self.enabled = enabled
-        self.is_public = is_public
         self.auth_type = auth_type
         self.username = username
         self.password = password
@@ -188,7 +185,6 @@ def parse_upstream_sources_from_env() -> list[EnvUpstreamSource]:
             url=url,
             source_type=data.get("TYPE", "generic").lower(),
             enabled=parse_bool(data.get("ENABLED"), True),
-            is_public=parse_bool(data.get("IS_PUBLIC"), True),
             auth_type=data.get("AUTH_TYPE", "none").lower(),
             username=data.get("USERNAME"),
             password=data.get("PASSWORD"),

backend/app/database.py

@@ -462,7 +462,6 @@ def _run_migrations():
                 source_type VARCHAR(50) NOT NULL DEFAULT 'generic',
                 url VARCHAR(2048) NOT NULL,
                 enabled BOOLEAN NOT NULL DEFAULT FALSE,
-                is_public BOOLEAN NOT NULL DEFAULT TRUE,
                 auth_type VARCHAR(20) NOT NULL DEFAULT 'none',
                 username VARCHAR(255),
                 password_encrypted BYTEA,
@@ -480,7 +479,6 @@ def _run_migrations():
             );
             CREATE INDEX IF NOT EXISTS idx_upstream_sources_enabled ON upstream_sources(enabled);
             CREATE INDEX IF NOT EXISTS idx_upstream_sources_source_type ON upstream_sources(source_type);
-            CREATE INDEX IF NOT EXISTS idx_upstream_sources_is_public ON upstream_sources(is_public);
             CREATE INDEX IF NOT EXISTS idx_upstream_sources_priority ON upstream_sources(priority);
             """,
         ),
@@ -489,14 +487,13 @@ def _run_migrations():
             sql="""
             CREATE TABLE IF NOT EXISTS cache_settings (
                 id INTEGER PRIMARY KEY DEFAULT 1,
-                allow_public_internet BOOLEAN NOT NULL DEFAULT TRUE,
                 auto_create_system_projects BOOLEAN NOT NULL DEFAULT TRUE,
                 created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
                 updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
                 CONSTRAINT check_cache_settings_singleton CHECK (id = 1)
             );
-            INSERT INTO cache_settings (id, allow_public_internet, auto_create_system_projects)
-            VALUES (1, TRUE, TRUE)
+            INSERT INTO cache_settings (id, auto_create_system_projects)
+            VALUES (1, TRUE)
             ON CONFLICT (id) DO NOTHING;
             """,
         ),
@@ -522,13 +519,50 @@ def _run_migrations():
         Migration(
             name="020_seed_default_upstream_sources",
             sql="""
-            INSERT INTO upstream_sources (id, name, source_type, url, enabled, is_public, auth_type, priority)
-            VALUES
-                (gen_random_uuid(), 'npm-public', 'npm', 'https://registry.npmjs.org', FALSE, TRUE, 'none', 100),
-                (gen_random_uuid(), 'pypi-public', 'pypi', 'https://pypi.org/simple', FALSE, TRUE, 'none', 100),
-                (gen_random_uuid(), 'maven-central', 'maven', 'https://repo1.maven.org/maven2', FALSE, TRUE, 'none', 100),
-                (gen_random_uuid(), 'docker-hub', 'docker', 'https://registry-1.docker.io', FALSE, TRUE, 'none', 100)
-            ON CONFLICT (name) DO NOTHING;
+            -- Originally seeded public sources, but these are no longer used.
+            -- Migration 023 deletes any previously seeded sources.
+            -- This migration is now a no-op for fresh installs.
+            SELECT 1;
+            """,
+        ),
+        Migration(
+            name="021_remove_is_public_from_upstream_sources",
+            sql="""
+            DO $$
+            BEGIN
+                -- Drop the index if it exists
+                DROP INDEX IF EXISTS idx_upstream_sources_is_public;
+
+                -- Drop the column if it exists
+                IF EXISTS (
+                    SELECT 1 FROM information_schema.columns
+                    WHERE table_name = 'upstream_sources' AND column_name = 'is_public'
+                ) THEN
+                    ALTER TABLE upstream_sources DROP COLUMN is_public;
+                END IF;
+            END $$;
+            """,
+        ),
+        Migration(
+            name="022_remove_allow_public_internet_from_cache_settings",
+            sql="""
+            DO $$
+            BEGIN
+                IF EXISTS (
+                    SELECT 1 FROM information_schema.columns
+                    WHERE table_name = 'cache_settings' AND column_name = 'allow_public_internet'
+                ) THEN
+                    ALTER TABLE cache_settings DROP COLUMN allow_public_internet;
+                END IF;
+            END $$;
+            """,
+        ),
+        Migration(
+            name="023_delete_seeded_public_sources",
+            sql="""
+            -- Delete the seeded public sources that were added by migration 020
+            DELETE FROM upstream_sources
+            WHERE name IN ('npm-public', 'pypi-public', 'maven-central', 'docker-hub');
             """,
         ),
     ]

backend/app/main.py

@@ -11,6 +11,7 @@ from slowapi.errors import RateLimitExceeded
 from .config import get_settings
 from .database import init_db, SessionLocal
 from .routes import router
+from .pypi_proxy import router as pypi_router
 from .seed import seed_database
 from .auth import create_default_admin
 from .rate_limit import limiter
@@ -65,6 +66,7 @@ app.add_exception_handler(RateLimitExceeded, _rate_limit_exceeded_handler)
 
 # Include API routes
 app.include_router(router)
+app.include_router(pypi_router)
 
 # Serve static files (React build) if the directory exists
 static_dir = os.path.join(os.path.dirname(__file__), "..", "..", "frontend", "dist")

backend/app/models.py

@@ -667,7 +667,6 @@ class UpstreamSource(Base):
     source_type = Column(String(50), default="generic", nullable=False)
     url = Column(String(2048), nullable=False)
     enabled = Column(Boolean, default=False, nullable=False)
-    is_public = Column(Boolean, default=True, nullable=False)
     auth_type = Column(String(20), default="none", nullable=False)
     username = Column(String(255))
     password_encrypted = Column(LargeBinary)
@@ -684,7 +683,6 @@ class UpstreamSource(Base):
     __table_args__ = (
         Index("idx_upstream_sources_enabled", "enabled"),
         Index("idx_upstream_sources_source_type", "source_type"),
-        Index("idx_upstream_sources_is_public", "is_public"),
         Index("idx_upstream_sources_priority", "priority"),
         CheckConstraint(
             "source_type IN ('npm', 'pypi', 'maven', 'docker', 'helm', 'nuget', 'deb', 'rpm', 'generic')",
@@ -747,13 +745,12 @@ class UpstreamSource(Base):
 class CacheSettings(Base):
     """Global cache settings (singleton table).
 
-    Controls behavior of the upstream caching system including air-gap mode.
+    Controls behavior of the upstream caching system.
     """
 
     __tablename__ = "cache_settings"
 
     id = Column(Integer, primary_key=True, default=1)
-    allow_public_internet = Column(Boolean, default=True, nullable=False)
     auto_create_system_projects = Column(Boolean, default=True, nullable=False)
     created_at = Column(DateTime(timezone=True), default=datetime.utcnow)
     updated_at = Column(

backend/app/purge_seed_data.py

@@ -194,7 +194,8 @@ def purge_seed_data(db: Session) -> dict:
             synchronize_session=False
         )
         # Delete any access permissions for this user
-        db.query(AccessPermission).filter(AccessPermission.user_id == user.id).delete(
+        # Note: AccessPermission.user_id is VARCHAR (username), not UUID
+        db.query(AccessPermission).filter(AccessPermission.user_id == user.username).delete(
             synchronize_session=False
         )
         db.delete(user)

backend/app/pypi_proxy.py

@@ -0,0 +1,780 @@
+"""
+Transparent PyPI proxy implementing PEP 503 (Simple API).
+
+Provides endpoints that allow pip to use Orchard as a PyPI index URL.
+Artifacts are cached on first access through configured upstream sources.
+"""
+
+import hashlib
+import logging
+import re
+import tarfile
+import zipfile
+from io import BytesIO
+from typing import Optional, List, Tuple
+from urllib.parse import urljoin, urlparse, quote, unquote
+
+import httpx
+from fastapi import APIRouter, Depends, HTTPException, Request, Response
+from fastapi.responses import StreamingResponse, HTMLResponse
+from sqlalchemy.orm import Session
+
+from .database import get_db
+from .models import UpstreamSource, CachedUrl, Artifact, Project, Package, Tag, PackageVersion, ArtifactDependency
+from .storage import S3Storage, get_storage
+from .config import get_env_upstream_sources
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(prefix="/pypi", tags=["pypi-proxy"])
+
+
+def _parse_requires_dist(requires_dist: str) -> Tuple[str, Optional[str]]:
+    """Parse a Requires-Dist line into (package_name, version_constraint).
+
+    Examples:
+        "requests (>=2.25.0)" -> ("requests", ">=2.25.0")
+        "typing-extensions; python_version < '3.8'" -> ("typing-extensions", None)
+        "numpy>=1.21.0" -> ("numpy", ">=1.21.0")
+        "certifi" -> ("certifi", None)
+
+    Returns:
+        Tuple of (normalized_package_name, version_constraint or None)
+    """
+    # Remove any environment markers (after semicolon)
+    if ';' in requires_dist:
+        requires_dist = requires_dist.split(';')[0].strip()
+
+    # Match patterns like "package (>=1.0)" or "package>=1.0" or "package"
+    # Pattern breakdown: package name, optional whitespace, optional version in parens or directly
+    match = re.match(
+        r'^([a-zA-Z0-9][-a-zA-Z0-9._]*)\s*(?:\(([^)]+)\)|([<>=!~][^\s;]+))?',
+        requires_dist.strip()
+    )
+
+    if not match:
+        return None, None
+
+    package_name = match.group(1)
+    # Version can be in parentheses (group 2) or directly after name (group 3)
+    version_constraint = match.group(2) or match.group(3)
+
+    # Normalize package name (PEP 503)
+    normalized_name = re.sub(r'[-_.]+', '-', package_name).lower()
+
+    # Clean up version constraint
+    if version_constraint:
+        version_constraint = version_constraint.strip()
+
+    return normalized_name, version_constraint
+
+
+def _extract_requires_from_metadata(metadata_content: str) -> List[Tuple[str, Optional[str]]]:
+    """Extract all Requires-Dist entries from METADATA/PKG-INFO content.
+
+    Args:
+        metadata_content: The content of a METADATA or PKG-INFO file
+
+    Returns:
+        List of (package_name, version_constraint) tuples
+    """
+    dependencies = []
+
+    for line in metadata_content.split('\n'):
+        if line.startswith('Requires-Dist:'):
+            # Extract the value after "Requires-Dist:"
+            value = line[len('Requires-Dist:'):].strip()
+            pkg_name, version = _parse_requires_dist(value)
+            if pkg_name:
+                dependencies.append((pkg_name, version))
+
+    return dependencies
+
+
+def _extract_metadata_from_wheel(content: bytes) -> Optional[str]:
+    """Extract METADATA file content from a wheel (zip) file.
+
+    Wheel files have structure: {package}-{version}.dist-info/METADATA
+
+    Args:
+        content: The wheel file content as bytes
+
+    Returns:
+        METADATA file content as string, or None if not found
+    """
+    try:
+        with zipfile.ZipFile(BytesIO(content)) as zf:
+            # Find the .dist-info directory
+            for name in zf.namelist():
+                if name.endswith('.dist-info/METADATA'):
+                    return zf.read(name).decode('utf-8', errors='replace')
+    except Exception as e:
+        logger.warning(f"Failed to extract metadata from wheel: {e}")
+    return None
+
+
+def _extract_metadata_from_sdist(content: bytes, filename: str) -> Optional[str]:
+    """Extract PKG-INFO file content from a source distribution (.tar.gz).
+
+    Source distributions have structure: {package}-{version}/PKG-INFO
+
+    Args:
+        content: The tarball content as bytes
+        filename: The original filename (used to determine package name)
+
+    Returns:
+        PKG-INFO file content as string, or None if not found
+    """
+    try:
+        with tarfile.open(fileobj=BytesIO(content), mode='r:gz') as tf:
+            # Find PKG-INFO in the root directory of the archive
+            for member in tf.getmembers():
+                if member.name.endswith('/PKG-INFO') and member.name.count('/') == 1:
+                    f = tf.extractfile(member)
+                    if f:
+                        return f.read().decode('utf-8', errors='replace')
+    except Exception as e:
+        logger.warning(f"Failed to extract metadata from sdist {filename}: {e}")
+    return None
+
+
+def _extract_dependencies(content: bytes, filename: str) -> List[Tuple[str, Optional[str]]]:
+    """Extract dependencies from a PyPI package file.
+
+    Supports wheel (.whl) and source distribution (.tar.gz) formats.
+
+    Args:
+        content: The package file content as bytes
+        filename: The original filename
+
+    Returns:
+        List of (package_name, version_constraint) tuples
+    """
+    metadata = None
+
+    if filename.endswith('.whl'):
+        metadata = _extract_metadata_from_wheel(content)
+    elif filename.endswith('.tar.gz'):
+        metadata = _extract_metadata_from_sdist(content, filename)
+
+    if metadata:
+        return _extract_requires_from_metadata(metadata)
+
+    return []
+
+# Timeout configuration for proxy requests
+PROXY_CONNECT_TIMEOUT = 30.0
+PROXY_READ_TIMEOUT = 60.0
+
+
+def _extract_pypi_version(filename: str) -> Optional[str]:
+    """Extract version from PyPI filename.
+
+    Handles formats like:
+    - cowsay-6.1-py3-none-any.whl
+    - cowsay-1.0.tar.gz
+    - some_package-1.2.3.post1-cp39-cp39-linux_x86_64.whl
+    """
+    # Remove extension
+    if filename.endswith('.whl'):
+        # Wheel: name-version-pytag-abitag-platform.whl
+        parts = filename[:-4].split('-')
+        if len(parts) >= 2:
+            return parts[1]
+    elif filename.endswith('.tar.gz'):
+        # Source: name-version.tar.gz
+        base = filename[:-7]
+        # Find the last hyphen that precedes a version-like string
+        match = re.match(r'^(.+)-(\d+.*)$', base)
+        if match:
+            return match.group(2)
+    elif filename.endswith('.zip'):
+        # Egg/zip: name-version.zip
+        base = filename[:-4]
+        match = re.match(r'^(.+)-(\d+.*)$', base)
+        if match:
+            return match.group(2)
+    return None
+
+
+def _get_pypi_upstream_sources(db: Session) -> list[UpstreamSource]:
+    """Get all enabled upstream sources configured for PyPI."""
+    # Get database sources
+    db_sources = (
+        db.query(UpstreamSource)
+        .filter(
+            UpstreamSource.source_type == "pypi",
+            UpstreamSource.enabled == True,
+        )
+        .order_by(UpstreamSource.priority)
+        .all()
+    )
+
+    # Get env sources
+    env_sources = [
+        s for s in get_env_upstream_sources()
+        if s.source_type == "pypi" and s.enabled
+    ]
+
+    # Combine and sort by priority
+    all_sources = list(db_sources) + list(env_sources)
+    return sorted(all_sources, key=lambda s: s.priority)
+
+
+def _build_auth_headers(source) -> dict:
+    """Build authentication headers for an upstream source."""
+    headers = {}
+
+    if hasattr(source, 'auth_type'):
+        if source.auth_type == "bearer":
+            password = source.get_password() if hasattr(source, 'get_password') else getattr(source, 'password', None)
+            if password:
+                headers["Authorization"] = f"Bearer {password}"
+        elif source.auth_type == "api_key":
+            custom_headers = source.get_headers() if hasattr(source, 'get_headers') else {}
+            if custom_headers:
+                headers.update(custom_headers)
+
+    return headers
+
+
+def _get_basic_auth(source) -> Optional[tuple[str, str]]:
+    """Get basic auth credentials if applicable."""
+    if hasattr(source, 'auth_type') and source.auth_type == "basic":
+        username = getattr(source, 'username', None)
+        if username:
+            password = source.get_password() if hasattr(source, 'get_password') else getattr(source, 'password', '')
+            return (username, password or '')
+    return None
+
+
+def _get_base_url(request: Request) -> str:
+    """
+    Get the external base URL, respecting X-Forwarded-Proto header.
+
+    When behind a reverse proxy that terminates SSL, the request.base_url
+    will show http:// even though the external URL is https://. This function
+    checks the X-Forwarded-Proto header to determine the correct scheme.
+    """
+    base_url = str(request.base_url).rstrip('/')
+
+    # Check for X-Forwarded-Proto header (set by reverse proxies)
+    forwarded_proto = request.headers.get('x-forwarded-proto')
+    if forwarded_proto:
+        # Replace the scheme with the forwarded protocol
+        parsed = urlparse(base_url)
+        base_url = f"{forwarded_proto}://{parsed.netloc}{parsed.path}"
+
+    return base_url
+
+
+def _rewrite_package_links(html: str, base_url: str, package_name: str, upstream_base_url: str) -> str:
+    """
+    Rewrite download links in a PyPI simple page to go through our proxy.
+
+    Args:
+        html: The HTML content from upstream
+        base_url: Our server's base URL
+        package_name: The package name for the URL path
+        upstream_base_url: The upstream URL used to fetch this page (for resolving relative URLs)
+
+    Returns:
+        HTML with rewritten download links
+    """
+    # Pattern to match href attributes in anchor tags
+    # PyPI simple pages have links like:
+    # <a href="https://files.pythonhosted.org/packages/.../file.tar.gz#sha256=...">file.tar.gz</a>
+    # Or relative URLs from Artifactory like:
+    # <a href="../../packages/packages/62/35/.../requests-0.10.0.tar.gz#sha256=...">
+
+    def replace_href(match):
+        original_url = match.group(1)
+
+        # Resolve relative URLs to absolute using the upstream base URL
+        if not original_url.startswith(('http://', 'https://')):
+            # Split off fragment before resolving
+            url_without_fragment = original_url.split('#')[0]
+            fragment_part = original_url[len(url_without_fragment):]
+            absolute_url = urljoin(upstream_base_url, url_without_fragment) + fragment_part
+        else:
+            absolute_url = original_url
+
+        # Extract the filename from the URL
+        parsed = urlparse(absolute_url)
+        path_parts = parsed.path.split('/')
+        filename = path_parts[-1] if path_parts else ''
+
+        # Keep the hash fragment if present
+        fragment = f"#{parsed.fragment}" if parsed.fragment else ""
+
+        # Encode the absolute URL (without fragment) for safe transmission
+        encoded_url = quote(absolute_url.split('#')[0], safe='')
+
+        # Build new URL pointing to our proxy
+        new_url = f"{base_url}/pypi/simple/{package_name}/{filename}?upstream={encoded_url}{fragment}"
+
+        return f'href="{new_url}"'
+
+    # Match href="..." patterns
+    rewritten = re.sub(r'href="([^"]+)"', replace_href, html)
+
+    return rewritten
+
+
+@router.get("/simple/")
+async def pypi_simple_index(
+    request: Request,
+    db: Session = Depends(get_db),
+):
+    """
+    PyPI Simple API index - lists all packages.
+
+    Proxies to the first available upstream PyPI source.
+    """
+    sources = _get_pypi_upstream_sources(db)
+
+    if not sources:
+        raise HTTPException(
+            status_code=503,
+            detail="No PyPI upstream sources configured"
+        )
+
+    # Try each source in priority order
+    last_error = None
+    for source in sources:
+        try:
+            headers = {"User-Agent": "Orchard-PyPI-Proxy/1.0"}
+            headers.update(_build_auth_headers(source))
+            auth = _get_basic_auth(source)
+
+            # Use URL as-is - users should provide full path including /simple
+            simple_url = source.url.rstrip('/') + '/'
+
+            timeout = httpx.Timeout(PROXY_READ_TIMEOUT, connect=PROXY_CONNECT_TIMEOUT)
+
+            with httpx.Client(timeout=timeout, follow_redirects=False) as client:
+                response = client.get(
+                    simple_url,
+                    headers=headers,
+                    auth=auth,
+                )
+
+                # Handle redirects manually to avoid loops
+                if response.status_code in (301, 302, 303, 307, 308):
+                    redirect_url = response.headers.get('location')
+                    if redirect_url:
+                        # Follow the redirect once
+                        response = client.get(
+                            redirect_url,
+                            headers=headers,
+                            auth=auth,
+                            follow_redirects=False,
+                        )
+
+                if response.status_code == 200:
+                    # Return the index as-is (links are to package pages, not files)
+                    # We could rewrite these too, but for now just proxy
+                    content = response.text
+
+                    # Rewrite package links to go through our proxy
+                    base_url = _get_base_url(request)
+                    content = re.sub(
+                        r'href="([^"]+)/"',
+                        lambda m: f'href="{base_url}/pypi/simple/{m.group(1)}/"',
+                        content
+                    )
+
+                    return HTMLResponse(content=content)
+
+                last_error = f"HTTP {response.status_code}"
+
+        except httpx.ConnectError as e:
+            last_error = f"Connection failed: {e}"
+            logger.warning(f"PyPI proxy: failed to connect to {source.url}: {e}")
+        except httpx.TimeoutException as e:
+            last_error = f"Timeout: {e}"
+            logger.warning(f"PyPI proxy: timeout connecting to {source.url}: {e}")
+        except Exception as e:
+            last_error = str(e)
+            logger.warning(f"PyPI proxy: error fetching from {source.url}: {e}")
+
+    raise HTTPException(
+        status_code=502,
+        detail=f"Failed to fetch package index from upstream: {last_error}"
+    )
+
+
+@router.get("/simple/{package_name}/")
+async def pypi_package_versions(
+    request: Request,
+    package_name: str,
+    db: Session = Depends(get_db),
+):
+    """
+    PyPI Simple API package page - lists all versions/files for a package.
+
+    Proxies to upstream and rewrites download links to go through our cache.
+    """
+    sources = _get_pypi_upstream_sources(db)
+
+    if not sources:
+        raise HTTPException(
+            status_code=503,
+            detail="No PyPI upstream sources configured"
+        )
+
+    base_url = _get_base_url(request)
+
+    # Normalize package name (PEP 503)
+    normalized_name = re.sub(r'[-_.]+', '-', package_name).lower()
+
+    # Try each source in priority order
+    last_error = None
+    for source in sources:
+        try:
+            headers = {"User-Agent": "Orchard-PyPI-Proxy/1.0"}
+            headers.update(_build_auth_headers(source))
+            auth = _get_basic_auth(source)
+
+            # Use URL as-is - users should provide full path including /simple
+            package_url = source.url.rstrip('/') + f'/{normalized_name}/'
+            final_url = package_url  # Track final URL after redirects
+
+            timeout = httpx.Timeout(PROXY_READ_TIMEOUT, connect=PROXY_CONNECT_TIMEOUT)
+
+            with httpx.Client(timeout=timeout, follow_redirects=False) as client:
+                response = client.get(
+                    package_url,
+                    headers=headers,
+                    auth=auth,
+                )
+
+                # Handle redirects manually
+                redirect_count = 0
+                while response.status_code in (301, 302, 303, 307, 308) and redirect_count < 5:
+                    redirect_url = response.headers.get('location')
+                    if not redirect_url:
+                        break
+
+                    # Make redirect URL absolute if needed
+                    if not redirect_url.startswith('http'):
+                        redirect_url = urljoin(final_url, redirect_url)
+
+                    final_url = redirect_url  # Update final URL
+
+                    response = client.get(
+                        redirect_url,
+                        headers=headers,
+                        auth=auth,
+                        follow_redirects=False,
+                    )
+                    redirect_count += 1
+
+                if response.status_code == 200:
+                    content = response.text
+
+                    # Rewrite download links to go through our proxy
+                    # Pass final_url so relative URLs can be resolved correctly
+                    content = _rewrite_package_links(content, base_url, normalized_name, final_url)
+
+                    return HTMLResponse(content=content)
+
+                if response.status_code == 404:
+                    # Package not found in this source, try next
+                    last_error = f"Package not found in {source.name}"
+                    continue
+
+                last_error = f"HTTP {response.status_code}"
+
+        except httpx.ConnectError as e:
+            last_error = f"Connection failed: {e}"
+            logger.warning(f"PyPI proxy: failed to connect to {source.url}: {e}")
+        except httpx.TimeoutException as e:
+            last_error = f"Timeout: {e}"
+            logger.warning(f"PyPI proxy: timeout connecting to {source.url}: {e}")
+        except Exception as e:
+            last_error = str(e)
+            logger.warning(f"PyPI proxy: error fetching {package_name} from {source.url}: {e}")
+
+    raise HTTPException(
+        status_code=404,
+        detail=f"Package '{package_name}' not found: {last_error}"
+    )
+
+
+@router.get("/simple/{package_name}/{filename}")
+async def pypi_download_file(
+    request: Request,
+    package_name: str,
+    filename: str,
+    upstream: Optional[str] = None,
+    db: Session = Depends(get_db),
+    storage: S3Storage = Depends(get_storage),
+):
+    """
+    Download a package file, caching it in Orchard.
+
+    Args:
+        package_name: The package name
+        filename: The filename to download
+        upstream: URL-encoded upstream URL to fetch from
+    """
+    if not upstream:
+        raise HTTPException(
+            status_code=400,
+            detail="Missing 'upstream' query parameter with source URL"
+        )
+
+    # Decode the upstream URL
+    upstream_url = unquote(upstream)
+
+    # Check if we already have this URL cached
+    url_hash = hashlib.sha256(upstream_url.encode()).hexdigest()
+    cached_url = db.query(CachedUrl).filter(CachedUrl.url_hash == url_hash).first()
+
+    if cached_url:
+        # Serve from cache
+        artifact = db.query(Artifact).filter(Artifact.id == cached_url.artifact_id).first()
+        if artifact:
+            logger.info(f"PyPI proxy: serving cached {filename} (artifact {artifact.id[:12]})")
+
+            # Stream from S3
+            try:
+                stream, content_length, _ = storage.get_stream(artifact.s3_key)
+
+                def stream_content():
+                    """Generator that yields chunks from the S3 stream."""
+                    try:
+                        for chunk in stream.iter_chunks():
+                            yield chunk
+                    finally:
+                        stream.close()
+
+                return StreamingResponse(
+                    stream_content(),
+                    media_type=artifact.content_type or "application/octet-stream",
+                    headers={
+                        "Content-Disposition": f'attachment; filename="{filename}"',
+                        "Content-Length": str(content_length),
+                        "X-Checksum-SHA256": artifact.id,
+                        "X-Cache": "HIT",
+                    }
+                )
+            except Exception as e:
+                logger.error(f"PyPI proxy: error streaming cached artifact: {e}")
+                # Fall through to fetch from upstream
+
+    # Not cached - fetch from upstream
+    sources = _get_pypi_upstream_sources(db)
+
+    # Use the first available source for authentication headers
+    # Note: The upstream URL may point to files.pythonhosted.org or other CDNs,
+    # not the configured source URL directly, so we can't strictly validate the host
+    matched_source = sources[0] if sources else None
+
+    try:
+        headers = {"User-Agent": "Orchard-PyPI-Proxy/1.0"}
+        if matched_source:
+            headers.update(_build_auth_headers(matched_source))
+        auth = _get_basic_auth(matched_source) if matched_source else None
+
+        timeout = httpx.Timeout(300.0, connect=PROXY_CONNECT_TIMEOUT)  # 5 minutes for large files
+
+        # Fetch the file
+        logger.info(f"PyPI proxy: fetching {filename} from {upstream_url}")
+
+        with httpx.Client(timeout=timeout, follow_redirects=False) as client:
+            response = client.get(
+                upstream_url,
+                headers=headers,
+                auth=auth,
+            )
+
+            # Handle redirects manually
+            redirect_count = 0
+            while response.status_code in (301, 302, 303, 307, 308) and redirect_count < 5:
+                redirect_url = response.headers.get('location')
+                if not redirect_url:
+                    break
+
+                if not redirect_url.startswith('http'):
+                    redirect_url = urljoin(upstream_url, redirect_url)
+
+                logger.info(f"PyPI proxy: following redirect to {redirect_url}")
+
+                # Don't send auth to different hosts
+                redirect_headers = {"User-Agent": "Orchard-PyPI-Proxy/1.0"}
+                redirect_auth = None
+                if urlparse(redirect_url).netloc == urlparse(upstream_url).netloc:
+                    redirect_headers.update(headers)
+                    redirect_auth = auth
+
+                response = client.get(
+                    redirect_url,
+                    headers=redirect_headers,
+                    auth=redirect_auth,
+                    follow_redirects=False,
+                )
+                redirect_count += 1
+
+            if response.status_code != 200:
+                raise HTTPException(
+                    status_code=response.status_code,
+                    detail=f"Upstream returned {response.status_code}"
+                )
+
+            content = response.content
+            content_type = response.headers.get('content-type', 'application/octet-stream')
+
+        # Store in S3 (computes hash and deduplicates automatically)
+        from io import BytesIO
+        result = storage.store(BytesIO(content))
+        sha256 = result.sha256
+        size = result.size
+
+        logger.info(f"PyPI proxy: downloaded {filename}, {size} bytes, sha256={sha256[:12]}")
+
+        # Check if artifact already exists
+        existing = db.query(Artifact).filter(Artifact.id == sha256).first()
+        if existing:
+            # Increment ref count
+            existing.ref_count += 1
+            db.flush()
+        else:
+            # Create artifact record
+            new_artifact = Artifact(
+                id=sha256,
+                original_name=filename,
+                content_type=content_type,
+                size=size,
+                ref_count=1,
+                created_by="pypi-proxy",
+                s3_key=result.s3_key,
+                checksum_md5=result.md5,
+                checksum_sha1=result.sha1,
+                s3_etag=result.s3_etag,
+            )
+            db.add(new_artifact)
+            db.flush()
+
+        # Create/get system project and package
+        system_project = db.query(Project).filter(Project.name == "_pypi").first()
+        if not system_project:
+            system_project = Project(
+                name="_pypi",
+                description="System project for cached PyPI packages",
+                is_public=True,
+                is_system=True,
+                created_by="pypi-proxy",
+            )
+            db.add(system_project)
+            db.flush()
+        elif not system_project.is_system:
+            # Ensure existing project is marked as system
+            system_project.is_system = True
+            db.flush()
+
+        # Normalize package name
+        normalized_name = re.sub(r'[-_.]+', '-', package_name).lower()
+
+        package = db.query(Package).filter(
+            Package.project_id == system_project.id,
+            Package.name == normalized_name,
+        ).first()
+        if not package:
+            package = Package(
+                project_id=system_project.id,
+                name=normalized_name,
+                description=f"PyPI package: {normalized_name}",
+                format="pypi",
+            )
+            db.add(package)
+            db.flush()
+
+        # Create tag with filename
+        existing_tag = db.query(Tag).filter(
+            Tag.package_id == package.id,
+            Tag.name == filename,
+        ).first()
+        if not existing_tag:
+            tag = Tag(
+                package_id=package.id,
+                name=filename,
+                artifact_id=sha256,
+                created_by="pypi-proxy",
+            )
+            db.add(tag)
+
+        # Extract and create version
+        # Only create version for actual package files, not .metadata files
+        version = _extract_pypi_version(filename)
+        if version and not filename.endswith('.metadata'):
+            # Check by version string (the unique constraint is on package_id + version)
+            existing_version = db.query(PackageVersion).filter(
+                PackageVersion.package_id == package.id,
+                PackageVersion.version == version,
+            ).first()
+            if not existing_version:
+                pkg_version = PackageVersion(
+                    package_id=package.id,
+                    artifact_id=sha256,
+                    version=version,
+                    version_source="filename",
+                    created_by="pypi-proxy",
+                )
+                db.add(pkg_version)
+
+        # Cache the URL mapping
+        existing_cached = db.query(CachedUrl).filter(CachedUrl.url_hash == url_hash).first()
+        if not existing_cached:
+            cached_url_record = CachedUrl(
+                url_hash=url_hash,
+                url=upstream_url,
+                artifact_id=sha256,
+            )
+            db.add(cached_url_record)
+
+        # Extract and store dependencies
+        dependencies = _extract_dependencies(content, filename)
+        if dependencies:
+            logger.info(f"PyPI proxy: extracted {len(dependencies)} dependencies from {filename}")
+            for dep_name, dep_version in dependencies:
+                # Check if this dependency already exists for this artifact
+                existing_dep = db.query(ArtifactDependency).filter(
+                    ArtifactDependency.artifact_id == sha256,
+                    ArtifactDependency.dependency_project == "_pypi",
+                    ArtifactDependency.dependency_package == dep_name,
+                ).first()
+
+                if not existing_dep:
+                    dep = ArtifactDependency(
+                        artifact_id=sha256,
+                        dependency_project="_pypi",
+                        dependency_package=dep_name,
+                        version_constraint=dep_version if dep_version else "*",
+                    )
+                    db.add(dep)
+
+        db.commit()
+
+        # Return the file
+        return Response(
+            content=content,
+            media_type=content_type,
+            headers={
+                "Content-Disposition": f'attachment; filename="{filename}"',
+                "Content-Length": str(size),
+                "X-Checksum-SHA256": sha256,
+                "X-Cache": "MISS",
+            }
+        )
+
+    except httpx.ConnectError as e:
+        raise HTTPException(status_code=502, detail=f"Connection failed: {e}")
+    except httpx.TimeoutException as e:
+        raise HTTPException(status_code=504, detail=f"Timeout: {e}")
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.exception(f"PyPI proxy: error downloading {filename}")
+        raise HTTPException(status_code=500, detail=str(e))

backend/app/routes.py

@@ -1680,6 +1680,7 @@ def create_project(
         name=db_project.name,
         description=db_project.description,
         is_public=db_project.is_public,
+        is_system=db_project.is_system,
         created_at=db_project.created_at,
         updated_at=db_project.updated_at,
         created_by=db_project.created_by,
@@ -1704,6 +1705,7 @@ def get_project(
         name=project.name,
         description=project.description,
         is_public=project.is_public,
+        is_system=project.is_system,
         created_at=project.created_at,
         updated_at=project.updated_at,
         created_by=project.created_by,
@@ -2704,6 +2706,7 @@ def list_team_projects(
                 name=p.name,
                 description=p.description,
                 is_public=p.is_public,
+                is_system=p.is_system,
                 created_at=p.created_at,
                 updated_at=p.updated_at,
                 created_by=p.created_by,
@@ -2827,14 +2830,15 @@ def list_packages(
             db.query(func.count(Tag.id)).filter(Tag.package_id == pkg.id).scalar() or 0
         )
 
-        # Get unique artifact count and total size via uploads
+        # Get unique artifact count and total size via tags
+        # (PyPI proxy creates tags without uploads, so query from tags)
         artifact_stats = (
             db.query(
-                func.count(func.distinct(Upload.artifact_id)),
+                func.count(func.distinct(Tag.artifact_id)),
                 func.coalesce(func.sum(Artifact.size), 0),
             )
-            .join(Artifact, Upload.artifact_id == Artifact.id)
-            .filter(Upload.package_id == pkg.id)
+            .join(Artifact, Tag.artifact_id == Artifact.id)
+            .filter(Tag.package_id == pkg.id)
             .first()
         )
         artifact_count = artifact_stats[0] if artifact_stats else 0
@@ -2930,14 +2934,15 @@ def get_package(
         db.query(func.count(Tag.id)).filter(Tag.package_id == pkg.id).scalar() or 0
     )
 
-    # Get unique artifact count and total size via uploads
+    # Get unique artifact count and total size via tags
+    # (PyPI proxy creates tags without uploads, so query from tags)
     artifact_stats = (
         db.query(
-            func.count(func.distinct(Upload.artifact_id)),
+            func.count(func.distinct(Tag.artifact_id)),
             func.coalesce(func.sum(Artifact.size), 0),
         )
-        .join(Artifact, Upload.artifact_id == Artifact.id)
-        .filter(Upload.package_id == pkg.id)
+        .join(Artifact, Tag.artifact_id == Artifact.id)
+        .filter(Tag.package_id == pkg.id)
         .first()
     )
     artifact_count = artifact_stats[0] if artifact_stats else 0
@@ -6280,14 +6285,14 @@ def get_package_stats(
         db.query(func.count(Tag.id)).filter(Tag.package_id == package.id).scalar() or 0
     )
 
-    # Artifact stats via uploads
+    # Artifact stats via tags (tags exist for both user uploads and PyPI proxy)
     artifact_stats = (
         db.query(
-            func.count(func.distinct(Upload.artifact_id)),
+            func.count(func.distinct(Tag.artifact_id)),
             func.coalesce(func.sum(Artifact.size), 0),
         )
-        .join(Artifact, Upload.artifact_id == Artifact.id)
-        .filter(Upload.package_id == package.id)
+        .join(Artifact, Tag.artifact_id == Artifact.id)
+        .filter(Tag.package_id == package.id)
         .first()
     )
     artifact_count = artifact_stats[0] if artifact_stats else 0
@@ -7866,7 +7871,6 @@ from .upstream import (
     UpstreamTimeoutError,
     UpstreamHTTPError,
     UpstreamSSLError,
-    AirGapError,
     FileSizeExceededError as UpstreamFileSizeExceededError,
     SourceNotFoundError,
     SourceDisabledError,
@@ -8021,10 +8025,6 @@ def cache_artifact(
        - Optionally creates tag in user project
        - Records URL mapping for provenance
 
-    **Air-Gap Mode:**
-    When `allow_public_internet` is false, only URLs matching private
-    (non-public) upstream sources are allowed.
-
     **Example (curl):**
     ```bash
     curl -X POST "http://localhost:8080/api/v1/cache" \\
@@ -8118,8 +8118,6 @@ def cache_artifact(
             cache_request.url,
             expected_hash=cache_request.expected_hash,
         )
-    except AirGapError as e:
-        raise HTTPException(status_code=403, detail=str(e))
     except SourceDisabledError as e:
         raise HTTPException(status_code=503, detail=str(e))
     except UpstreamHTTPError as e:
@@ -8312,6 +8310,200 @@ def _create_user_cache_reference(
     return f"{user_project_name}/{user_package_name}"
 
 
+# --- Cache Resolve Endpoint ---
+
+from .schemas import CacheResolveRequest
+
+
+@router.post(
+    "/api/v1/cache/resolve",
+    response_model=CacheResponse,
+    tags=["cache"],
+    summary="Cache an artifact by package coordinates",
+)
+def cache_resolve(
+    request: Request,
+    resolve_request: CacheResolveRequest,
+    db: Session = Depends(get_db),
+    storage: S3Storage = Depends(get_storage),
+    current_user: User = Depends(get_current_user),
+):
+    """
+    Cache an artifact by package coordinates (no URL required).
+
+    The server finds the appropriate download URL based on source_type
+    and configured upstream sources. Currently supports PyPI packages.
+
+    **Request Body:**
+    - `source_type` (required): Type of source (pypi, npm, maven, etc.)
+    - `package` (required): Package name
+    - `version` (required): Package version
+    - `user_project` (optional): Also create reference in this user project
+    - `user_package` (optional): Package name in user project
+    - `user_tag` (optional): Tag name in user project
+
+    **Example (curl):**
+    ```bash
+    curl -X POST "http://localhost:8080/api/v1/cache/resolve" \\
+      -H "Authorization: Bearer <api-key>" \\
+      -H "Content-Type: application/json" \\
+      -d '{
+        "source_type": "pypi",
+        "package": "requests",
+        "version": "2.31.0"
+      }'
+    ```
+    """
+    import re
+    import httpx
+    from urllib.parse import quote, unquote
+
+    if resolve_request.source_type != "pypi":
+        raise HTTPException(
+            status_code=501,
+            detail=f"Cache resolve for '{resolve_request.source_type}' not yet implemented. Currently only 'pypi' is supported."
+        )
+
+    # Get PyPI upstream sources
+    sources = (
+        db.query(UpstreamSource)
+        .filter(
+            UpstreamSource.source_type == "pypi",
+            UpstreamSource.enabled == True,
+        )
+        .order_by(UpstreamSource.priority)
+        .all()
+    )
+
+    # Also get env sources
+    env_sources = [
+        s for s in get_env_upstream_sources()
+        if s.source_type == "pypi" and s.enabled
+    ]
+    all_sources = list(sources) + list(env_sources)
+    all_sources = sorted(all_sources, key=lambda s: s.priority)
+
+    if not all_sources:
+        raise HTTPException(
+            status_code=503,
+            detail="No PyPI upstream sources configured"
+        )
+
+    # Normalize package name (PEP 503)
+    normalized_package = re.sub(r'[-_.]+', '-', resolve_request.package).lower()
+
+    # Query the Simple API to find the download URL
+    download_url = None
+    matched_filename = None
+    last_error = None
+
+    for source in all_sources:
+        try:
+            headers = {"User-Agent": "Orchard-CacheResolver/1.0"}
+
+            # Build auth if needed
+            if hasattr(source, 'auth_type'):
+                if source.auth_type == "bearer":
+                    password = source.get_password() if hasattr(source, 'get_password') else getattr(source, 'password', None)
+                    if password:
+                        headers["Authorization"] = f"Bearer {password}"
+                elif source.auth_type == "api_key":
+                    custom_headers = source.get_headers() if hasattr(source, 'get_headers') else {}
+                    if custom_headers:
+                        headers.update(custom_headers)
+
+            auth = None
+            if hasattr(source, 'auth_type') and source.auth_type == "basic":
+                username = getattr(source, 'username', None)
+                if username:
+                    password = source.get_password() if hasattr(source, 'get_password') else getattr(source, 'password', '')
+                    auth = (username, password or '')
+
+            source_url = getattr(source, 'url', '')
+            package_url = source_url.rstrip('/') + f'/simple/{normalized_package}/'
+
+            timeout = httpx.Timeout(connect=30.0, read=60.0)
+
+            with httpx.Client(timeout=timeout, follow_redirects=True) as client:
+                response = client.get(package_url, headers=headers, auth=auth)
+
+                if response.status_code == 404:
+                    last_error = f"Package not found in {getattr(source, 'name', 'source')}"
+                    continue
+
+                if response.status_code != 200:
+                    last_error = f"HTTP {response.status_code} from {getattr(source, 'name', 'source')}"
+                    continue
+
+                # Parse HTML to find the version
+                html = response.text
+                # Look for links containing the version
+                # Pattern: href="...{package}-{version}...#sha256=..."
+                version_pattern = re.escape(resolve_request.version)
+                link_pattern = rf'href="([^"]+{normalized_package}[^"]*{version_pattern}[^"]*)"'
+
+                matches = re.findall(link_pattern, html, re.IGNORECASE)
+
+                if not matches:
+                    # Try with original package name
+                    link_pattern = rf'href="([^"]+{re.escape(resolve_request.package)}[^"]*{version_pattern}[^"]*)"'
+                    matches = re.findall(link_pattern, html, re.IGNORECASE)
+
+                if matches:
+                    # Prefer .tar.gz or .whl files
+                    for match in matches:
+                        url = match.split('#')[0]  # Remove hash fragment
+                        if url.endswith('.tar.gz') or url.endswith('.whl'):
+                            download_url = url
+                            # Extract filename
+                            matched_filename = url.split('/')[-1]
+                            break
+                    if not download_url:
+                        # Use first match
+                        download_url = matches[0].split('#')[0]
+                        matched_filename = download_url.split('/')[-1]
+                    break
+
+                last_error = f"Version {resolve_request.version} not found for {resolve_request.package}"
+
+        except httpx.ConnectError as e:
+            last_error = f"Connection failed: {e}"
+            logger.warning(f"Cache resolve: failed to connect to {getattr(source, 'url', 'source')}: {e}")
+        except httpx.TimeoutException as e:
+            last_error = f"Timeout: {e}"
+            logger.warning(f"Cache resolve: timeout connecting to {getattr(source, 'url', 'source')}: {e}")
+        except Exception as e:
+            last_error = str(e)
+            logger.warning(f"Cache resolve: error: {e}")
+
+    if not download_url:
+        raise HTTPException(
+            status_code=404,
+            detail=f"Could not find {resolve_request.package}=={resolve_request.version}: {last_error}"
+        )
+
+    # Now cache the artifact using the existing cache_artifact logic
+    # Construct a CacheRequest
+    cache_request = CacheRequest(
+        url=download_url,
+        source_type="pypi",
+        package_name=normalized_package,
+        tag=matched_filename or resolve_request.version,
+        user_project=resolve_request.user_project,
+        user_package=resolve_request.user_package,
+        user_tag=resolve_request.user_tag,
+    )
+
+    # Call the cache logic
+    return cache_artifact(
+        request=request,
+        cache_request=cache_request,
+        db=db,
+        storage=storage,
+        current_user=current_user,
+    )
+
+
 # --- Upstream Sources Admin API ---
 
 from .schemas import (
@@ -8333,7 +8525,6 @@ def _env_source_to_response(env_source) -> UpstreamSourceResponse:
         source_type=env_source.source_type,
         url=env_source.url,
         enabled=env_source.enabled,
-        is_public=env_source.is_public,
         auth_type=env_source.auth_type,
         username=env_source.username,
         has_password=bool(env_source.password),
@@ -8417,7 +8608,6 @@ def list_upstream_sources(
                 source_type=s.source_type,
                 url=s.url,
                 enabled=s.enabled,
-                is_public=s.is_public,
                 auth_type=s.auth_type,
                 username=s.username,
                 has_password=s.has_password(),
@@ -8466,7 +8656,6 @@ def create_upstream_source(
       "source_type": "npm",
       "url": "https://npm.internal.corp",
       "enabled": true,
-      "is_public": false,
       "auth_type": "basic",
       "username": "reader",
       "password": "secret123",
@@ -8488,7 +8677,6 @@ def create_upstream_source(
         source_type=source_create.source_type,
         url=source_create.url,
         enabled=source_create.enabled,
-        is_public=source_create.is_public,
         auth_type=source_create.auth_type,
         username=source_create.username,
         priority=source_create.priority,
@@ -8528,7 +8716,6 @@ def create_upstream_source(
         source_type=source.source_type,
         url=source.url,
         enabled=source.enabled,
-        is_public=source.is_public,
         auth_type=source.auth_type,
         username=source.username,
         has_password=source.has_password(),
@@ -8576,7 +8763,6 @@ def get_upstream_source(
         source_type=source.source_type,
         url=source.url,
         enabled=source.enabled,
-        is_public=source.is_public,
         auth_type=source.auth_type,
         username=source.username,
         has_password=source.has_password(),
@@ -8663,10 +8849,6 @@ def update_upstream_source(
         changes["enabled"] = {"old": source.enabled, "new": source_update.enabled}
         source.enabled = source_update.enabled
 
-    if source_update.is_public is not None and source_update.is_public != source.is_public:
-        changes["is_public"] = {"old": source.is_public, "new": source_update.is_public}
-        source.is_public = source_update.is_public
-
     if source_update.auth_type is not None and source_update.auth_type != source.auth_type:
         changes["auth_type"] = {"old": source.auth_type, "new": source_update.auth_type}
         source.auth_type = source_update.auth_type
@@ -8719,7 +8901,6 @@ def update_upstream_source(
         source_type=source.source_type,
         url=source.url,
         enabled=source.enabled,
-        is_public=source.is_public,
         auth_type=source.auth_type,
         username=source.username,
         has_password=source.has_password(),
@@ -8860,12 +9041,10 @@ def get_cache_settings(
     Admin-only endpoint for viewing cache configuration.
 
     **Settings:**
-    - `allow_public_internet`: When false, blocks all requests to sources marked `is_public=true` (air-gap mode)
     - `auto_create_system_projects`: When true, system projects (`_npm`, etc.) are created automatically on first cache
 
     **Environment variable overrides:**
     Settings can be overridden via environment variables:
-    - `ORCHARD_CACHE_ALLOW_PUBLIC_INTERNET`: Overrides `allow_public_internet`
     - `ORCHARD_CACHE_AUTO_CREATE_SYSTEM_PROJECTS`: Overrides `auto_create_system_projects`
 
     When an env var override is active, the `*_env_override` field will contain the override value.
@@ -8874,12 +9053,6 @@ def get_cache_settings(
     db_settings = _get_cache_settings(db)
 
     # Apply env var overrides
-    allow_public_internet = db_settings.allow_public_internet
-    allow_public_internet_env_override = None
-    if app_settings.cache_allow_public_internet is not None:
-        allow_public_internet = app_settings.cache_allow_public_internet
-        allow_public_internet_env_override = app_settings.cache_allow_public_internet
-
     auto_create_system_projects = db_settings.auto_create_system_projects
     auto_create_system_projects_env_override = None
     if app_settings.cache_auto_create_system_projects is not None:
@@ -8887,9 +9060,7 @@ def get_cache_settings(
         auto_create_system_projects_env_override = app_settings.cache_auto_create_system_projects
 
     return CacheSettingsResponse(
-        allow_public_internet=allow_public_internet,
         auto_create_system_projects=auto_create_system_projects,
-        allow_public_internet_env_override=allow_public_internet_env_override,
         auto_create_system_projects_env_override=auto_create_system_projects_env_override,
         created_at=db_settings.created_at,
         updated_at=db_settings.updated_at,
@@ -8915,16 +9086,11 @@ def update_cache_settings(
     Supports partial updates - only provided fields are updated.
 
     **Settings:**
-    - `allow_public_internet`: When false, enables air-gap mode (blocks public sources)
     - `auto_create_system_projects`: When false, system projects must be created manually
 
     **Note:** Environment variables can override these settings. When overridden,
     the `*_env_override` fields in the response indicate the effective value.
     Updates to the database will be saved but won't take effect until the env var is removed.
-
-    **Warning:** Changing `allow_public_internet` to false will immediately block
-    all cache requests to public sources. This is a security-sensitive setting
-    and is logged prominently.
     """
     app_settings = get_settings()
     settings = _get_cache_settings(db)
@@ -8932,26 +9098,6 @@ def update_cache_settings(
     # Track changes for audit log
     changes = {}
 
-    if settings_update.allow_public_internet is not None:
-        if settings_update.allow_public_internet != settings.allow_public_internet:
-            changes["allow_public_internet"] = {
-                "old": settings.allow_public_internet,
-                "new": settings_update.allow_public_internet,
-            }
-            settings.allow_public_internet = settings_update.allow_public_internet
-
-            # Log prominently for security audit
-            if not settings_update.allow_public_internet:
-                logger.warning(
-                    f"AIR-GAP MODE ENABLED by {current_user.username} - "
-                    f"all public internet access is now blocked"
-                )
-            else:
-                logger.warning(
-                    f"AIR-GAP MODE DISABLED by {current_user.username} - "
-                    f"public internet access is now allowed"
-                )
-
     if settings_update.auto_create_system_projects is not None:
         if settings_update.auto_create_system_projects != settings.auto_create_system_projects:
             changes["auto_create_system_projects"] = {
@@ -8961,11 +9107,9 @@ def update_cache_settings(
             settings.auto_create_system_projects = settings_update.auto_create_system_projects
 
     if changes:
-        # Audit log with security flag for air-gap changes
-        is_security_change = "allow_public_internet" in changes
         _log_audit(
             db,
-            action="cache_settings.update" if not is_security_change else "cache_settings.security_update",
+            action="cache_settings.update",
             resource="cache-settings",
             user_id=current_user.username,
             source_ip=request.client.host if request.client else None,
@@ -8976,12 +9120,6 @@ def update_cache_settings(
     db.refresh(settings)
 
     # Apply env var overrides for the response
-    allow_public_internet = settings.allow_public_internet
-    allow_public_internet_env_override = None
-    if app_settings.cache_allow_public_internet is not None:
-        allow_public_internet = app_settings.cache_allow_public_internet
-        allow_public_internet_env_override = app_settings.cache_allow_public_internet
-
     auto_create_system_projects = settings.auto_create_system_projects
     auto_create_system_projects_env_override = None
     if app_settings.cache_auto_create_system_projects is not None:
@@ -8989,9 +9127,7 @@ def update_cache_settings(
         auto_create_system_projects_env_override = app_settings.cache_auto_create_system_projects
 
     return CacheSettingsResponse(
-        allow_public_internet=allow_public_internet,
         auto_create_system_projects=auto_create_system_projects,
-        allow_public_internet_env_override=allow_public_internet_env_override,
         auto_create_system_projects_env_override=auto_create_system_projects_env_override,
         created_at=settings.created_at,
         updated_at=settings.updated_at,

backend/app/schemas.py

@@ -33,6 +33,7 @@ class ProjectResponse(BaseModel):
     name: str
     description: Optional[str]
     is_public: bool
+    is_system: bool = False
     created_at: datetime
     updated_at: datetime
     created_by: str
@@ -1214,7 +1215,6 @@ class UpstreamSourceCreate(BaseModel):
     source_type: str = "generic"
     url: str
     enabled: bool = False
-    is_public: bool = True
     auth_type: str = "none"
     username: Optional[str] = None
     password: Optional[str] = None  # Write-only
@@ -1271,7 +1271,6 @@ class UpstreamSourceUpdate(BaseModel):
     source_type: Optional[str] = None
     url: Optional[str] = None
     enabled: Optional[bool] = None
-    is_public: Optional[bool] = None
     auth_type: Optional[str] = None
     username: Optional[str] = None
     password: Optional[str] = None  # Write-only, None = keep existing, empty string = clear
@@ -1331,7 +1330,6 @@ class UpstreamSourceResponse(BaseModel):
     source_type: str
     url: str
     enabled: bool
-    is_public: bool
     auth_type: str
     username: Optional[str]
     has_password: bool  # True if password is set
@@ -1347,9 +1345,7 @@ class UpstreamSourceResponse(BaseModel):
 
 class CacheSettingsResponse(BaseModel):
     """Global cache settings response"""
-    allow_public_internet: bool
     auto_create_system_projects: bool
-    allow_public_internet_env_override: Optional[bool] = None  # Set if overridden by env var
     auto_create_system_projects_env_override: Optional[bool] = None  # Set if overridden by env var
     created_at: Optional[datetime] = None  # May be None for legacy data
     updated_at: Optional[datetime] = None  # May be None for legacy data
@@ -1360,7 +1356,6 @@ class CacheSettingsResponse(BaseModel):
 
 class CacheSettingsUpdate(BaseModel):
     """Update cache settings (partial)"""
-    allow_public_internet: Optional[bool] = None
     auto_create_system_projects: Optional[bool] = None
 
 
@@ -1438,4 +1433,41 @@ class CacheResponse(BaseModel):
     user_reference: Optional[str] = None  # e.g., "my-app/npm-deps:lodash-4.17.21"
 
 
+class CacheResolveRequest(BaseModel):
+    """Request to cache an artifact by package coordinates (no URL required).
+
+    The server will construct the appropriate URL based on source_type and
+    configured upstream sources.
+    """
+    source_type: str
+    package: str
+    version: str
+    user_project: Optional[str] = None
+    user_package: Optional[str] = None
+    user_tag: Optional[str] = None
+
+    @field_validator('source_type')
+    @classmethod
+    def validate_source_type(cls, v: str) -> str:
+        if v not in SOURCE_TYPES:
+            raise ValueError(f"source_type must be one of: {', '.join(SOURCE_TYPES)}")
+        return v
+
+    @field_validator('package')
+    @classmethod
+    def validate_package(cls, v: str) -> str:
+        v = v.strip()
+        if not v:
+            raise ValueError("package cannot be empty")
+        return v
+
+    @field_validator('version')
+    @classmethod
+    def validate_version(cls, v: str) -> str:
+        v = v.strip()
+        if not v:
+            raise ValueError("version cannot be empty")
+        return v
+
+
 

backend/app/upstream.py

@@ -57,10 +57,6 @@ class UpstreamSSLError(UpstreamError):
     pass
 
 
-class AirGapError(UpstreamError):
-    """Request blocked due to air-gap mode."""
-
-    pass
 
 
 class FileSizeExceededError(UpstreamError):
@@ -156,12 +152,6 @@ class UpstreamClient:
         # Sort sources by priority (lower = higher priority)
         self.sources = sorted(self.sources, key=lambda s: s.priority)
 
-    def _get_allow_public_internet(self) -> bool:
-        """Get the allow_public_internet setting."""
-        if self.cache_settings is None:
-            return True  # Default to allowing if no settings provided
-        return self.cache_settings.allow_public_internet
-
     def _match_source(self, url: str) -> Optional[UpstreamSource]:
         """
         Find the upstream source that matches the given URL.
@@ -288,7 +278,6 @@ class UpstreamClient:
             FetchResult with content, hash, size, and headers.
 
         Raises:
-            AirGapError: If air-gap mode blocks the request.
             SourceDisabledError: If the matching source is disabled.
             UpstreamConnectionError: On connection failures.
             UpstreamTimeoutError: On timeout.
@@ -301,19 +290,6 @@ class UpstreamClient:
         # Match URL to source
         source = self._match_source(url)
 
-        # Check air-gap mode
-        allow_public = self._get_allow_public_internet()
-
-        if not allow_public:
-            if source is None:
-                raise AirGapError(
-                    f"Air-gap mode enabled: URL does not match any configured upstream source: {url}"
-                )
-            if source.is_public:
-                raise AirGapError(
-                    f"Air-gap mode enabled: Cannot fetch from public source '{source.name}'"
-                )
-
         # Check if source is enabled (if we have a match)
         if source is not None and not source.enabled:
             raise SourceDisabledError(
@@ -536,7 +512,8 @@ class UpstreamClient:
         Test connectivity to an upstream source.
 
         Performs a HEAD request to the source URL to verify connectivity
-        and authentication.
+        and authentication. Does not follow redirects - a 3xx response
+        is considered successful since it proves the server is reachable.
 
         Args:
             source: The upstream source to test.
@@ -564,7 +541,7 @@ class UpstreamClient:
                     source.url,
                     headers=headers,
                     auth=auth,
-                    follow_redirects=True,
+                    follow_redirects=False,
                 )
                 # Consider 2xx and 3xx as success, also 405 (Method Not Allowed)
                 # since some servers don't support HEAD
@@ -582,5 +559,7 @@ class UpstreamClient:
             return (False, f"Connection timed out: {e}", None)
         except httpx.ReadTimeout as e:
             return (False, f"Read timed out: {e}", None)
+        except httpx.TooManyRedirects as e:
+            return (False, f"Too many redirects: {e}", None)
         except Exception as e:
             return (False, f"Error: {e}", None)

backend/tests/integration/test_projects_api.py

@@ -128,7 +128,9 @@ class TestProjectListingFilters:
         assert response.status_code == 200
 
         data = response.json()
-        names = [p["name"] for p in data["items"]]
+        # Filter out system projects (names starting with "_") as they may have
+        # collation-specific sort behavior and aren't part of the test data
+        names = [p["name"] for p in data["items"] if not p["name"].startswith("_")]
         assert names == sorted(names)
 
 

backend/tests/integration/test_pypi_proxy.py

@@ -0,0 +1,137 @@
+"""Integration tests for PyPI transparent proxy."""
+
+import os
+import pytest
+import httpx
+
+
+def get_base_url():
+    """Get the base URL for the Orchard server from environment."""
+    return os.environ.get("ORCHARD_TEST_URL", "http://localhost:8080")
+
+
+class TestPyPIProxyEndpoints:
+    """Tests for PyPI proxy endpoints.
+
+    These endpoints are public (no auth required) since pip needs to use them.
+    """
+
+    @pytest.mark.integration
+    def test_pypi_simple_index(self):
+        """Test that /pypi/simple/ returns HTML response."""
+        with httpx.Client(base_url=get_base_url(), timeout=30.0) as client:
+            response = client.get("/pypi/simple/")
+            # Returns 200 if sources configured, 503 if not
+            assert response.status_code in (200, 503)
+            if response.status_code == 200:
+                assert "text/html" in response.headers.get("content-type", "")
+            else:
+                assert "No PyPI upstream sources configured" in response.json()["detail"]
+
+    @pytest.mark.integration
+    def test_pypi_package_endpoint(self):
+        """Test that /pypi/simple/{package}/ returns appropriate response."""
+        with httpx.Client(base_url=get_base_url(), timeout=30.0) as client:
+            response = client.get("/pypi/simple/requests/")
+            # Returns 200 if sources configured and package found,
+            # 404 if package not found, 503 if no sources
+            assert response.status_code in (200, 404, 503)
+            if response.status_code == 200:
+                assert "text/html" in response.headers.get("content-type", "")
+            elif response.status_code == 404:
+                assert "not found" in response.json()["detail"].lower()
+            else:  # 503
+                assert "No PyPI upstream sources configured" in response.json()["detail"]
+
+    @pytest.mark.integration
+    def test_pypi_download_missing_upstream_param(self):
+        """Test that /pypi/simple/{package}/{filename} requires upstream param."""
+        with httpx.Client(base_url=get_base_url(), timeout=30.0) as client:
+            response = client.get("/pypi/simple/requests/requests-2.31.0.tar.gz")
+            assert response.status_code == 400
+            assert "upstream" in response.json()["detail"].lower()
+
+
+class TestPyPILinkRewriting:
+    """Tests for URL rewriting in PyPI proxy responses."""
+
+    def test_rewrite_package_links(self):
+        """Test that download links are rewritten to go through proxy."""
+        from app.pypi_proxy import _rewrite_package_links
+
+        html = '''
+        <html>
+        <body>
+        <a href="https://files.pythonhosted.org/packages/ab/cd/requests-2.31.0.tar.gz#sha256=abc123">requests-2.31.0.tar.gz</a>
+        <a href="https://files.pythonhosted.org/packages/ef/gh/requests-2.31.0-py3-none-any.whl#sha256=def456">requests-2.31.0-py3-none-any.whl</a>
+        </body>
+        </html>
+        '''
+
+        # upstream_base_url is used to resolve relative URLs (not needed here since URLs are absolute)
+        result = _rewrite_package_links(
+            html,
+            "http://localhost:8080",
+            "requests",
+            "https://pypi.org/simple/requests/"
+        )
+
+        # Links should be rewritten to go through our proxy
+        assert "/pypi/simple/requests/requests-2.31.0.tar.gz?upstream=" in result
+        assert "/pypi/simple/requests/requests-2.31.0-py3-none-any.whl?upstream=" in result
+        # Original URLs should be encoded in upstream param
+        assert "files.pythonhosted.org" in result
+        # Hash fragments should be preserved
+        assert "#sha256=abc123" in result
+        assert "#sha256=def456" in result
+
+    def test_rewrite_relative_links(self):
+        """Test that relative URLs are resolved to absolute URLs."""
+        from app.pypi_proxy import _rewrite_package_links
+
+        # Artifactory-style relative URLs
+        html = '''
+        <html>
+        <body>
+        <a href="../../packages/ab/cd/requests-2.31.0.tar.gz#sha256=abc123">requests-2.31.0.tar.gz</a>
+        </body>
+        </html>
+        '''
+
+        result = _rewrite_package_links(
+            html,
+            "https://orchard.example.com",
+            "requests",
+            "https://artifactory.example.com/api/pypi/pypi-remote/simple/requests/"
+        )
+
+        # The relative URL should be resolved to absolute
+        # ../../packages/ab/cd/... from /api/pypi/pypi-remote/simple/requests/ resolves to /api/pypi/pypi-remote/packages/ab/cd/...
+        assert "upstream=https%3A%2F%2Fartifactory.example.com%2Fapi%2Fpypi%2Fpypi-remote%2Fpackages" in result
+        # Hash fragment should be preserved
+        assert "#sha256=abc123" in result
+
+
+class TestPyPIPackageNormalization:
+    """Tests for PyPI package name normalization."""
+
+    @pytest.mark.integration
+    def test_package_name_normalized(self):
+        """Test that package names are normalized per PEP 503.
+
+        Different capitalizations/separators should all be valid paths.
+        The endpoint normalizes to lowercase with hyphens before lookup.
+        """
+        with httpx.Client(base_url=get_base_url(), timeout=30.0) as client:
+            # Test various name formats - all should be valid endpoint paths
+            for package_name in ["Requests", "some_package", "some-package"]:
+                response = client.get(f"/pypi/simple/{package_name}/")
+                # 200 = found, 404 = not found, 503 = no sources configured
+                assert response.status_code in (200, 404, 503), \
+                    f"Unexpected status {response.status_code} for {package_name}"
+
+                # Verify response is appropriate for the status code
+                if response.status_code == 200:
+                    assert "text/html" in response.headers.get("content-type", "")
+                elif response.status_code == 503:
+                    assert "No PyPI upstream sources configured" in response.json()["detail"]

backend/tests/test_upstream_caching.py

@@ -91,7 +91,6 @@ class TestUpstreamSourceModel:
         assert hasattr(source, 'source_type')
         assert hasattr(source, 'url')
         assert hasattr(source, 'enabled')
-        assert hasattr(source, 'is_public')
         assert hasattr(source, 'auth_type')
         assert hasattr(source, 'username')
         assert hasattr(source, 'password_encrypted')
@@ -107,7 +106,6 @@ class TestUpstreamSourceModel:
             source_type="npm",
             url="https://npm.example.com",
             enabled=True,
-            is_public=False,
             auth_type="basic",
             username="admin",
             priority=50,
@@ -116,7 +114,6 @@ class TestUpstreamSourceModel:
         assert source.source_type == "npm"
         assert source.url == "https://npm.example.com"
         assert source.enabled is True
-        assert source.is_public is False
         assert source.auth_type == "basic"
         assert source.username == "admin"
         assert source.priority == 50
@@ -260,7 +257,6 @@ class TestUpstreamSourceSchemas:
             source_type="npm",
             url="https://npm.example.com",
             enabled=True,
-            is_public=False,
             auth_type="basic",
             username="admin",
             password="secret",
@@ -281,7 +277,6 @@ class TestUpstreamSourceSchemas:
         )
         assert source.source_type == "generic"
         assert source.enabled is False
-        assert source.is_public is True
         assert source.auth_type == "none"
         assert source.priority == 100
 
@@ -578,7 +573,6 @@ class TestUpstreamClientSourceMatching:
             name="npm-public",
             url="https://registry.npmjs.org",
             enabled=True,
-            is_public=True,
             auth_type="none",
             priority=100,
         )
@@ -603,7 +597,6 @@ class TestUpstreamClientSourceMatching:
             name="npm-private",
             url="https://registry.npmjs.org",
             enabled=True,
-            is_public=False,
             auth_type="basic",
             priority=50,
         )
@@ -611,7 +604,6 @@ class TestUpstreamClientSourceMatching:
             name="npm-public",
             url="https://registry.npmjs.org",
             enabled=True,
-            is_public=True,
             auth_type="none",
             priority=100,
         )
@@ -711,89 +703,6 @@ class TestUpstreamClientAuthHeaders:
         assert auth is None
 
 
-class TestUpstreamClientAirGapMode:
-    """Tests for air-gap mode enforcement."""
-
-    def test_airgap_blocks_public_source(self):
-        """Test that air-gap mode blocks public sources."""
-        from app.models import UpstreamSource, CacheSettings
-        from app.upstream import UpstreamClient, AirGapError
-
-        source = UpstreamSource(
-            name="npm-public",
-            url="https://registry.npmjs.org",
-            enabled=True,
-            is_public=True,
-            auth_type="none",
-            priority=100,
-        )
-        settings = CacheSettings(allow_public_internet=False)
-
-        client = UpstreamClient(sources=[source], cache_settings=settings)
-
-        with pytest.raises(AirGapError) as exc_info:
-            client.fetch("https://registry.npmjs.org/lodash")
-
-        assert "Air-gap mode enabled" in str(exc_info.value)
-        assert "public source" in str(exc_info.value)
-
-    def test_airgap_blocks_unmatched_url(self):
-        """Test that air-gap mode blocks URLs not matching any source."""
-        from app.models import CacheSettings
-        from app.upstream import UpstreamClient, AirGapError
-
-        settings = CacheSettings(allow_public_internet=False)
-        client = UpstreamClient(sources=[], cache_settings=settings)
-
-        with pytest.raises(AirGapError) as exc_info:
-            client.fetch("https://example.com/file.tgz")
-
-        assert "Air-gap mode enabled" in str(exc_info.value)
-        assert "does not match any configured" in str(exc_info.value)
-
-    def test_airgap_allows_private_source(self):
-        """Test that air-gap mode allows private sources."""
-        from app.models import UpstreamSource, CacheSettings
-        from app.upstream import UpstreamClient, SourceDisabledError
-
-        source = UpstreamSource(
-            name="npm-private",
-            url="https://npm.internal.corp",
-            enabled=False,  # Disabled, but would pass air-gap check
-            is_public=False,
-            auth_type="none",
-            priority=100,
-        )
-        settings = CacheSettings(allow_public_internet=False)
-
-        client = UpstreamClient(sources=[source], cache_settings=settings)
-
-        # Should fail due to disabled source, not air-gap
-        with pytest.raises(SourceDisabledError):
-            client.fetch("https://npm.internal.corp/package.tgz")
-
-    def test_allow_public_internet_true(self):
-        """Test that public internet is allowed when setting is true."""
-        from app.models import UpstreamSource, CacheSettings
-        from app.upstream import UpstreamClient, SourceDisabledError
-
-        source = UpstreamSource(
-            name="npm-public",
-            url="https://registry.npmjs.org",
-            enabled=False,  # Disabled
-            is_public=True,
-            auth_type="none",
-            priority=100,
-        )
-        settings = CacheSettings(allow_public_internet=True)
-
-        client = UpstreamClient(sources=[source], cache_settings=settings)
-
-        # Should fail due to disabled source, not air-gap
-        with pytest.raises(SourceDisabledError):
-            client.fetch("https://registry.npmjs.org/lodash")
-
-
 class TestUpstreamClientSourceDisabled:
     """Tests for disabled source handling."""
 
@@ -806,7 +715,6 @@ class TestUpstreamClientSourceDisabled:
             name="npm-public",
             url="https://registry.npmjs.org",
             enabled=False,
-            is_public=True,
             auth_type="none",
             priority=100,
         )
@@ -979,13 +887,6 @@ class TestUpstreamExceptions:
         assert error.status_code == 404
         assert error.response_headers == {"x-custom": "value"}
 
-    def test_airgap_error(self):
-        """Test AirGapError."""
-        from app.upstream import AirGapError
-
-        error = AirGapError("Blocked by air-gap")
-        assert "Blocked by air-gap" in str(error)
-
     def test_source_not_found_error(self):
         """Test SourceNotFoundError."""
         from app.upstream import SourceNotFoundError
@@ -1420,7 +1321,6 @@ class TestUpstreamSourcesAdminAPI:
                 "source_type": "generic",
                 "url": "https://example.com/packages",
                 "enabled": False,
-                "is_public": False,
                 "auth_type": "none",
                 "priority": 200,
             },
@@ -1432,7 +1332,6 @@ class TestUpstreamSourcesAdminAPI:
         assert data["source_type"] == "generic"
         assert data["url"] == "https://example.com/packages"
         assert data["enabled"] is False
-        assert data["is_public"] is False
         assert data["priority"] == 200
         assert "id" in data
 
@@ -1452,7 +1351,6 @@ class TestUpstreamSourcesAdminAPI:
                 "source_type": "npm",
                 "url": "https://npm.internal.corp",
                 "enabled": False,
-                "is_public": False,
                 "auth_type": "basic",
                 "username": "reader",
                 "password": "secret123",
@@ -1958,7 +1856,6 @@ class TestEnvVarUpstreamSourcesParsing:
             # Check defaults
             assert test_source.source_type == "generic"
             assert test_source.enabled is True
-            assert test_source.is_public is True
             assert test_source.auth_type == "none"
             assert test_source.priority == 100
         finally:
@@ -1981,7 +1878,6 @@ class TestEnvSourceToResponse:
             url="https://example.com",
             source_type="npm",
             enabled=True,
-            is_public=False,
             auth_type="basic",
             username="user",
             password="pass",
@@ -1992,7 +1888,6 @@ class TestEnvSourceToResponse:
         assert source.url == "https://example.com"
         assert source.source_type == "npm"
         assert source.enabled is True
-        assert source.is_public is False
         assert source.auth_type == "basic"
         assert source.username == "user"
         assert source.password == "pass"

frontend/src/api.ts

@@ -46,8 +46,6 @@ import {
   UpstreamSourceCreate,
   UpstreamSourceUpdate,
   UpstreamSourceTestResult,
-  CacheSettings,
-  CacheSettingsUpdate,
 } from './types';
 
 const API_BASE = '/api/v1';
@@ -748,21 +746,3 @@ export async function testUpstreamSource(id: string): Promise<UpstreamSourceTest
   });
   return handleResponse<UpstreamSourceTestResult>(response);
 }
-
-// Cache Settings Admin API
-export async function getCacheSettings(): Promise<CacheSettings> {
-  const response = await fetch(`${API_BASE}/admin/cache-settings`, {
-    credentials: 'include',
-  });
-  return handleResponse<CacheSettings>(response);
-}
-
-export async function updateCacheSettings(data: CacheSettingsUpdate): Promise<CacheSettings> {
-  const response = await fetch(`${API_BASE}/admin/cache-settings`, {
-    method: 'PUT',
-    headers: { 'Content-Type': 'application/json' },
-    body: JSON.stringify(data),
-    credentials: 'include',
-  });
-  return handleResponse<CacheSettings>(response);
-}

frontend/src/components/Layout.css

@@ -272,7 +272,7 @@
 .footer {
   background: var(--bg-secondary);
   border-top: 1px solid var(--border-primary);
-  padding: 24px 0;
+  padding: 12px 0;
 }
 
 .footer-content {

frontend/src/pages/AdminCachePage.css

@@ -34,74 +34,6 @@
   margin-bottom: 1rem;
 }
 
-/* Settings Section */
-.settings-section {
-  background: var(--bg-secondary);
-  border: 1px solid var(--border-color);
-  border-radius: 8px;
-  padding: 1.5rem;
-  margin-bottom: 2rem;
-}
-
-.settings-grid {
-  display: flex;
-  flex-direction: column;
-  gap: 1rem;
-}
-
-.setting-item {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  padding: 1rem;
-  background: var(--bg-primary);
-  border: 1px solid var(--border-color);
-  border-radius: 4px;
-}
-
-.toggle-label {
-  display: flex;
-  flex-direction: column;
-  gap: 0.25rem;
-}
-
-.setting-name {
-  font-weight: 500;
-  color: var(--text-primary);
-  display: flex;
-  align-items: center;
-  gap: 0.5rem;
-}
-
-.setting-description {
-  font-size: 0.85rem;
-  color: var(--text-secondary);
-}
-
-.toggle-button {
-  padding: 0.5rem 1rem;
-  border: none;
-  border-radius: 4px;
-  cursor: pointer;
-  font-weight: 500;
-  min-width: 100px;
-}
-
-.toggle-button.on {
-  background-color: #28a745;
-  color: white;
-}
-
-.toggle-button.off {
-  background-color: #dc3545;
-  color: white;
-}
-
-.toggle-button:disabled {
-  opacity: 0.6;
-  cursor: not-allowed;
-}
-
 /* Sources Section */
 .sources-section {
   background: var(--bg-secondary);
@@ -133,7 +65,7 @@
 .sources-table th,
 .sources-table td {
   padding: 0.75rem 1rem;
-  text-align: left;
+  text-align: center;
   border-bottom: 1px solid var(--border-color);
 }
 
@@ -156,6 +88,12 @@
 .source-name {
   font-weight: 500;
   color: var(--text-primary);
+  white-space: nowrap;
+}
+
+/* Name column should be left-aligned */
+.sources-table td:first-child {
+  text-align: left;
 }
 
 .url-cell {
@@ -165,10 +103,10 @@
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
+  text-align: left;
 }
 
 /* Badges */
-.public-badge,
 .env-badge,
 .status-badge {
   display: inline-block;
@@ -179,11 +117,6 @@
   margin-left: 0.5rem;
 }
 
-.public-badge {
-  background-color: #e3f2fd;
-  color: #1976d2;
-}
-
 .env-badge {
   background-color: #fff3e0;
   color: #e65100;
@@ -199,6 +132,12 @@
   color: #c62828;
 }
 
+.coming-soon-badge {
+  color: #9e9e9e;
+  font-style: italic;
+  font-size: 0.85em;
+}
+
 /* Actions */
 .actions-cell {
   white-space: nowrap;
@@ -212,18 +151,67 @@
   margin-right: 0;
 }
 
-.test-result {
-  display: inline-block;
-  margin-left: 0.5rem;
-  font-size: 0.85rem;
+.test-cell {
+  text-align: center;
+  width: 2rem;
 }
 
-.test-result.success {
+.test-dot {
+  font-size: 1rem;
+  cursor: default;
+}
+
+.test-dot.success {
   color: #2e7d32;
 }
 
-.test-result.failure {
+.test-dot.failure {
   color: #c62828;
+  cursor: pointer;
+}
+
+.test-dot.failure:hover {
+  color: #b71c1c;
+}
+
+.test-dot.testing {
+  color: #1976d2;
+  animation: pulse 1s infinite;
+}
+
+@keyframes pulse {
+  0%, 100% { opacity: 1; }
+  50% { opacity: 0.4; }
+}
+
+/* Error Modal */
+.error-modal-content {
+  background: var(--bg-primary);
+  border-radius: 8px;
+  padding: 2rem;
+  width: 100%;
+  max-width: 500px;
+}
+
+.error-modal-content h3 {
+  margin-top: 0;
+  color: #c62828;
+}
+
+.error-modal-content .error-details {
+  background: var(--bg-tertiary);
+  padding: 1rem;
+  border-radius: 4px;
+  font-family: monospace;
+  font-size: 0.9rem;
+  word-break: break-word;
+  white-space: pre-wrap;
+}
+
+.error-modal-content .modal-actions {
+  display: flex;
+  justify-content: flex-end;
+  margin-top: 1.5rem;
 }
 
 /* Buttons */
@@ -267,10 +255,22 @@
 }
 
 .btn-sm {
-  padding: 0.25rem 0.5rem;
+  padding: 0.25rem 0.75rem;
   font-size: 0.8rem;
 }
 
+.btn-secondary {
+  background-color: var(--bg-tertiary);
+  border-color: var(--border-color);
+  color: var(--text-primary);
+  font-weight: 500;
+}
+
+.btn-secondary:hover {
+  background-color: var(--bg-secondary);
+  border-color: var(--text-secondary);
+}
+
 .empty-message {
   color: var(--text-secondary);
   font-style: italic;
@@ -364,9 +364,14 @@
 
 .form-actions {
   display: flex;
-  justify-content: flex-end;
-  gap: 0.5rem;
+  justify-content: space-between;
+  align-items: center;
   margin-top: 1.5rem;
   padding-top: 1rem;
   border-top: 1px solid var(--border-color);
 }
+
+.form-actions-right {
+  display: flex;
+  gap: 0.5rem;
+}

frontend/src/pages/AdminCachePage.tsx

@@ -7,13 +7,12 @@ import {
   updateUpstreamSource,
   deleteUpstreamSource,
   testUpstreamSource,
-  getCacheSettings,
-  updateCacheSettings,
 } from '../api';
-import { UpstreamSource, CacheSettings, SourceType, AuthType } from '../types';
+import { UpstreamSource, SourceType, AuthType } from '../types';
 import './AdminCachePage.css';
 
 const SOURCE_TYPES: SourceType[] = ['npm', 'pypi', 'maven', 'docker', 'helm', 'nuget', 'deb', 'rpm', 'generic'];
+const SUPPORTED_SOURCE_TYPES: Set<SourceType> = new Set(['pypi', 'generic']);
 const AUTH_TYPES: AuthType[] = ['none', 'basic', 'bearer', 'api_key'];
 
 function AdminCachePage() {
@@ -25,11 +24,6 @@ function AdminCachePage() {
   const [loadingSources, setLoadingSources] = useState(true);
   const [sourcesError, setSourcesError] = useState<string | null>(null);
 
-  // Cache settings state
-  const [settings, setSettings] = useState<CacheSettings | null>(null);
-  const [loadingSettings, setLoadingSettings] = useState(true);
-  const [settingsError, setSettingsError] = useState<string | null>(null);
-
   // Create/Edit form state
   const [showForm, setShowForm] = useState(false);
   const [editingSource, setEditingSource] = useState<UpstreamSource | null>(null);
@@ -38,7 +32,6 @@ function AdminCachePage() {
     source_type: 'generic' as SourceType,
     url: '',
     enabled: true,
-    is_public: true,
     auth_type: 'none' as AuthType,
     username: '',
     password: '',
@@ -54,12 +47,13 @@ function AdminCachePage() {
   // Delete confirmation state
   const [deletingId, setDeletingId] = useState<string | null>(null);
 
-  // Settings update state
-  const [updatingSettings, setUpdatingSettings] = useState(false);
-
   // Success message
   const [successMessage, setSuccessMessage] = useState<string | null>(null);
 
+  // Error modal state
+  const [showErrorModal, setShowErrorModal] = useState(false);
+  const [selectedError, setSelectedError] = useState<{ sourceName: string; error: string } | null>(null);
+
   useEffect(() => {
     if (!authLoading && !user) {
       navigate('/login', { state: { from: '/admin/cache' } });
@@ -69,7 +63,6 @@ function AdminCachePage() {
   useEffect(() => {
     if (user && user.is_admin) {
       loadSources();
-      loadSettings();
     }
   }, [user]);
 
@@ -93,19 +86,6 @@ function AdminCachePage() {
     }
   }
 
-  async function loadSettings() {
-    setLoadingSettings(true);
-    setSettingsError(null);
-    try {
-      const data = await getCacheSettings();
-      setSettings(data);
-    } catch (err) {
-      setSettingsError(err instanceof Error ? err.message : 'Failed to load settings');
-    } finally {
-      setLoadingSettings(false);
-    }
-  }
-
   function openCreateForm() {
     setEditingSource(null);
     setFormData({
@@ -113,7 +93,6 @@ function AdminCachePage() {
       source_type: 'generic',
       url: '',
       enabled: true,
-      is_public: true,
       auth_type: 'none',
       username: '',
       password: '',
@@ -130,7 +109,6 @@ function AdminCachePage() {
       source_type: source.source_type,
       url: source.url,
       enabled: source.enabled,
-      is_public: source.is_public,
       auth_type: source.auth_type,
       username: source.username || '',
       password: '',
@@ -155,6 +133,8 @@ function AdminCachePage() {
     setFormError(null);
 
     try {
+      let savedSourceId: string | null = null;
+
       if (editingSource) {
         // Update existing source
         await updateUpstreamSource(editingSource.id, {
@@ -162,30 +142,35 @@ function AdminCachePage() {
           source_type: formData.source_type,
           url: formData.url.trim(),
           enabled: formData.enabled,
-          is_public: formData.is_public,
           auth_type: formData.auth_type,
           username: formData.username.trim() || undefined,
           password: formData.password || undefined,
           priority: formData.priority,
         });
+        savedSourceId = editingSource.id;
         setSuccessMessage('Source updated successfully');
       } else {
         // Create new source
-        await createUpstreamSource({
+        const newSource = await createUpstreamSource({
           name: formData.name.trim(),
           source_type: formData.source_type,
           url: formData.url.trim(),
           enabled: formData.enabled,
-          is_public: formData.is_public,
           auth_type: formData.auth_type,
           username: formData.username.trim() || undefined,
           password: formData.password || undefined,
           priority: formData.priority,
         });
+        savedSourceId = newSource.id;
         setSuccessMessage('Source created successfully');
       }
       setShowForm(false);
       await loadSources();
+
+      // Auto-test the source after save
+      if (savedSourceId) {
+        testSourceById(savedSourceId);
+      }
     } catch (err) {
       setFormError(err instanceof Error ? err.message : 'Failed to save source');
     } finally {
@@ -211,24 +196,28 @@ function AdminCachePage() {
   }
 
   async function handleTest(source: UpstreamSource) {
-    setTestingId(source.id);
-    setTestResults((prev) => ({ ...prev, [source.id]: { success: true, message: 'Testing...' } }));
+    testSourceById(source.id);
+  }
+
+  async function testSourceById(sourceId: string) {
+    setTestingId(sourceId);
+    setTestResults((prev) => ({ ...prev, [sourceId]: { success: true, message: 'Testing...' } }));
 
     try {
-      const result = await testUpstreamSource(source.id);
+      const result = await testUpstreamSource(sourceId);
       setTestResults((prev) => ({
         ...prev,
-        [source.id]: {
+        [sourceId]: {
           success: result.success,
           message: result.success
-            ? `Connected (${result.elapsed_ms}ms)`
+            ? `OK (${result.elapsed_ms}ms)`
             : result.error || `HTTP ${result.status_code}`,
         },
       }));
     } catch (err) {
       setTestResults((prev) => ({
         ...prev,
-        [source.id]: {
+        [sourceId]: {
           success: false,
           message: err instanceof Error ? err.message : 'Test failed',
         },
@@ -238,30 +227,9 @@ function AdminCachePage() {
     }
   }
 
-  async function handleSettingsToggle(field: 'allow_public_internet' | 'auto_create_system_projects') {
-    if (!settings) return;
-
-    // Check if env override is active
-    const isOverridden =
-      (field === 'allow_public_internet' && settings.allow_public_internet_env_override !== null) ||
-      (field === 'auto_create_system_projects' && settings.auto_create_system_projects_env_override !== null);
-
-    if (isOverridden) {
-      alert('This setting is overridden by an environment variable and cannot be changed via UI.');
-      return;
-    }
-
-    setUpdatingSettings(true);
-    try {
-      const update = { [field]: !settings[field] };
-      const newSettings = await updateCacheSettings(update);
-      setSettings(newSettings);
-      setSuccessMessage(`Setting "${field}" updated`);
-    } catch (err) {
-      setSettingsError(err instanceof Error ? err.message : 'Failed to update settings');
-    } finally {
-      setUpdatingSettings(false);
-    }
+  function showError(sourceName: string, error: string) {
+    setSelectedError({ sourceName, error });
+    setShowErrorModal(true);
   }
 
   if (authLoading) {
@@ -278,71 +246,13 @@ function AdminCachePage() {
 
   return (
     <div className="admin-cache-page">
-      <h1>Cache Management</h1>
+      <h1>Upstream Sources</h1>
 
       {successMessage && <div className="success-message">{successMessage}</div>}
 
-      {/* Cache Settings Section */}
-      <section className="settings-section">
-        <h2>Global Settings</h2>
-        {loadingSettings ? (
-          <p>Loading settings...</p>
-        ) : settingsError ? (
-          <div className="error-message">{settingsError}</div>
-        ) : settings ? (
-          <div className="settings-grid">
-            <div className="setting-item">
-              <label className="toggle-label">
-                <span className="setting-name">
-                  Allow Public Internet
-                  {settings.allow_public_internet_env_override !== null && (
-                    <span className="env-badge" title="Overridden by environment variable">
-                      ENV
-                    </span>
-                  )}
-                </span>
-                <span className="setting-description">
-                  When disabled (air-gap mode), requests to public sources are blocked.
-                </span>
-              </label>
-              <button
-                className={`toggle-button ${settings.allow_public_internet ? 'on' : 'off'}`}
-                onClick={() => handleSettingsToggle('allow_public_internet')}
-                disabled={updatingSettings || settings.allow_public_internet_env_override !== null}
-              >
-                {settings.allow_public_internet ? 'Enabled' : 'Disabled'}
-              </button>
-            </div>
-            <div className="setting-item">
-              <label className="toggle-label">
-                <span className="setting-name">
-                  Auto-create System Projects
-                  {settings.auto_create_system_projects_env_override !== null && (
-                    <span className="env-badge" title="Overridden by environment variable">
-                      ENV
-                    </span>
-                  )}
-                </span>
-                <span className="setting-description">
-                  Automatically create system projects (_npm, _pypi, etc.) on first cache request.
-                </span>
-              </label>
-              <button
-                className={`toggle-button ${settings.auto_create_system_projects ? 'on' : 'off'}`}
-                onClick={() => handleSettingsToggle('auto_create_system_projects')}
-                disabled={updatingSettings || settings.auto_create_system_projects_env_override !== null}
-              >
-                {settings.auto_create_system_projects ? 'Enabled' : 'Disabled'}
-              </button>
-            </div>
-          </div>
-        ) : null}
-      </section>
-
       {/* Upstream Sources Section */}
       <section className="sources-section">
         <div className="section-header">
-          <h2>Upstream Sources</h2>
           <button className="btn btn-primary" onClick={openCreateForm}>
             Add Source
           </button>
@@ -363,7 +273,7 @@ function AdminCachePage() {
                 <th>URL</th>
                 <th>Priority</th>
                 <th>Status</th>
-                <th>Source</th>
+                <th>Test</th>
                 <th>Actions</th>
               </tr>
             </thead>
@@ -372,51 +282,50 @@ function AdminCachePage() {
                 <tr key={source.id} className={source.enabled ? '' : 'disabled-row'}>
                   <td>
                     <span className="source-name">{source.name}</span>
-                    {source.is_public && <span className="public-badge">Public</span>}
+                    {source.source === 'env' && (
+                      <span className="env-badge" title="Defined via environment variable">ENV</span>
+                    )}
                   </td>
-                  <td>{source.source_type}</td>
-                  <td className="url-cell">{source.url}</td>
+                  <td>
+                    {source.source_type}
+                    {!SUPPORTED_SOURCE_TYPES.has(source.source_type) && (
+                      <span className="coming-soon-badge"> (coming soon)</span>
+                    )}
+                  </td>
+                  <td className="url-cell" title={source.url}>{source.url}</td>
                   <td>{source.priority}</td>
                   <td>
                     <span className={`status-badge ${source.enabled ? 'enabled' : 'disabled'}`}>
                       {source.enabled ? 'Enabled' : 'Disabled'}
                     </span>
                   </td>
-                  <td>
-                    {source.source === 'env' ? (
-                      <span className="env-badge" title="Defined via environment variable">
-                        ENV
-                      </span>
-                    ) : (
-                      'Database'
-                    )}
+                  <td className="test-cell">
+                    {testingId === source.id ? (
+                      <span className="test-dot testing" title="Testing...">●</span>
+                    ) : testResults[source.id] ? (
+                      testResults[source.id].success ? (
+                        <span className="test-dot success" title={testResults[source.id].message}>●</span>
+                      ) : (
+                        <span
+                          className="test-dot failure"
+                          title="Click to see error"
+                          onClick={() => showError(source.name, testResults[source.id].message)}
+                        >●</span>
+                      )
+                    ) : null}
                   </td>
                   <td className="actions-cell">
                     <button
-                      className="btn btn-sm"
+                      className="btn btn-sm btn-secondary"
                       onClick={() => handleTest(source)}
                       disabled={testingId === source.id}
                     >
-                      {testingId === source.id ? 'Testing...' : 'Test'}
+                      Test
                     </button>
                     {source.source !== 'env' && (
-                      <>
-                        <button className="btn btn-sm" onClick={() => openEditForm(source)}>
-                          Edit
-                        </button>
-                        <button
-                          className="btn btn-sm btn-danger"
-                          onClick={() => handleDelete(source)}
-                          disabled={deletingId === source.id}
-                        >
-                          {deletingId === source.id ? 'Deleting...' : 'Delete'}
-                        </button>
-                      </>
-                    )}
-                    {testResults[source.id] && (
-                      <span className={`test-result ${testResults[source.id].success ? 'success' : 'failure'}`}>
-                        {testResults[source.id].message}
-                      </span>
+                      <button className="btn btn-sm btn-secondary" onClick={() => openEditForm(source)}>
+                        Edit
+                      </button>
                     )}
                   </td>
                 </tr>
@@ -456,7 +365,7 @@ function AdminCachePage() {
                   >
                     {SOURCE_TYPES.map((type) => (
                       <option key={type} value={type}>
-                        {type}
+                        {type}{!SUPPORTED_SOURCE_TYPES.has(type) ? ' (coming soon)' : ''}
                       </option>
                     ))}
                   </select>
@@ -498,16 +407,6 @@ function AdminCachePage() {
                     Enabled
                   </label>
                 </div>
-                <div className="form-group checkbox-group">
-                  <label>
-                    <input
-                      type="checkbox"
-                      checked={formData.is_public}
-                      onChange={(e) => setFormData({ ...formData, is_public: e.target.checked })}
-                    />
-                    Public Internet Source
-                  </label>
-                </div>
               </div>
 
               <div className="form-group">
@@ -562,17 +461,47 @@ function AdminCachePage() {
               )}
 
               <div className="form-actions">
-                <button type="button" className="btn" onClick={() => setShowForm(false)}>
-                  Cancel
-                </button>
-                <button type="submit" className="btn btn-primary" disabled={isSaving}>
-                  {isSaving ? 'Saving...' : editingSource ? 'Update' : 'Create'}
-                </button>
+                {editingSource && (
+                  <button
+                    type="button"
+                    className="btn btn-danger"
+                    onClick={() => {
+                      handleDelete(editingSource);
+                      setShowForm(false);
+                    }}
+                    disabled={deletingId === editingSource.id}
+                  >
+                    {deletingId === editingSource.id ? 'Deleting...' : 'Delete'}
+                  </button>
+                )}
+                <div className="form-actions-right">
+                  <button type="button" className="btn" onClick={() => setShowForm(false)}>
+                    Cancel
+                  </button>
+                  <button type="submit" className="btn btn-primary" disabled={isSaving}>
+                    {isSaving ? 'Saving...' : editingSource ? 'Update' : 'Create'}
+                  </button>
+                </div>
               </div>
             </form>
           </div>
         </div>
       )}
+
+      {/* Error Details Modal */}
+      {showErrorModal && selectedError && (
+        <div className="modal-overlay" onClick={() => setShowErrorModal(false)}>
+          <div className="error-modal-content" onClick={(e) => e.stopPropagation()}>
+            <h3>Connection Error: {selectedError.sourceName}</h3>
+            <div className="error-details">{selectedError.error}</div>
+            <div className="modal-actions">
+              <button className="btn" onClick={() => setShowErrorModal(false)}>
+                Close
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
     </div>
   );
 }

frontend/src/pages/Home.tsx

@@ -249,7 +249,7 @@ function Home() {
               key: 'created_by',
               header: 'Owner',
               className: 'cell-owner',
-              render: (project) => project.created_by,
+              render: (project) => project.team_name || project.created_by,
             },
             ...(user
               ? [

frontend/src/pages/PackagePage.css

@@ -793,4 +793,194 @@ tr:hover .copy-btn {
   .ensure-file-modal {
     max-height: 90vh;
   }
+
+  .action-menu-dropdown {
+    right: 0;
+    left: auto;
+  }
+}
+
+/* Header upload button */
+.header-upload-btn {
+  margin-left: auto;
+}
+
+/* Tag/Version cell */
+.tag-version-cell {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+
+.tag-version-cell .version-badge {
+  font-size: 0.75rem;
+  color: var(--text-muted);
+}
+
+/* Icon buttons */
+.btn-icon {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 32px;
+  height: 32px;
+  padding: 0;
+  background: transparent;
+  border: 1px solid transparent;
+  border-radius: var(--radius-sm);
+  color: var(--text-secondary);
+  cursor: pointer;
+  transition: all var(--transition-fast);
+}
+
+.btn-icon:hover {
+  background: var(--bg-hover);
+  color: var(--text-primary);
+}
+
+/* Action menu */
+.action-buttons {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+}
+
+.action-menu {
+  position: relative;
+}
+
+/* Action menu backdrop for click-outside */
+.action-menu-backdrop {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  z-index: 999;
+}
+
+.action-menu-dropdown {
+  position: fixed;
+  z-index: 1000;
+  min-width: 180px;
+  padding: 4px 0;
+  background: var(--bg-secondary);
+  border: 1px solid var(--border-primary);
+  border-radius: var(--radius-md);
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+}
+
+.action-menu-dropdown button {
+  display: block;
+  width: 100%;
+  padding: 8px 12px;
+  background: none;
+  border: none;
+  text-align: left;
+  font-size: 0.875rem;
+  color: var(--text-primary);
+  cursor: pointer;
+  transition: background var(--transition-fast);
+}
+
+.action-menu-dropdown button:hover {
+  background: var(--bg-hover);
+}
+
+/* Upload Modal */
+.upload-modal,
+.create-tag-modal {
+  background: var(--bg-secondary);
+  border-radius: var(--radius-lg);
+  width: 90%;
+  max-width: 500px;
+  max-height: 90vh;
+  overflow: hidden;
+}
+
+.modal-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 16px 20px;
+  border-bottom: 1px solid var(--border-primary);
+}
+
+.modal-header h3 {
+  margin: 0;
+  font-size: 1.125rem;
+  font-weight: 600;
+}
+
+.modal-body {
+  padding: 20px;
+}
+
+.modal-description {
+  margin-bottom: 16px;
+  color: var(--text-secondary);
+  font-size: 0.875rem;
+}
+
+.modal-actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 12px;
+  margin-top: 20px;
+  padding-top: 16px;
+  border-top: 1px solid var(--border-primary);
+}
+
+/* Dependencies Modal */
+.deps-modal {
+  background: var(--bg-secondary);
+  border-radius: var(--radius-lg);
+  width: 90%;
+  max-width: 600px;
+  max-height: 80vh;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+}
+
+.deps-modal .modal-body {
+  overflow-y: auto;
+  flex: 1;
+}
+
+.deps-modal-controls {
+  display: flex;
+  gap: 8px;
+  margin-bottom: 16px;
+}
+
+/* Artifact ID Modal */
+.artifact-id-modal {
+  background: var(--bg-secondary);
+  border-radius: var(--radius-lg);
+  width: 90%;
+  max-width: 500px;
+}
+
+.artifact-id-display {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 16px;
+  background: var(--bg-tertiary);
+  border-radius: var(--radius-md);
+  border: 1px solid var(--border-primary);
+}
+
+.artifact-id-display code {
+  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
+  font-size: 0.8125rem;
+  color: var(--text-primary);
+  word-break: break-all;
+  flex: 1;
+}
+
+.artifact-id-display .copy-btn {
+  opacity: 1;
+  flex-shrink: 0;
 }

frontend/src/pages/PackagePage.tsx

@@ -63,12 +63,17 @@ function PackagePage() {
   const [accessDenied, setAccessDenied] = useState(false);
   const [uploadTag, setUploadTag] = useState('');
   const [uploadSuccess, setUploadSuccess] = useState<string | null>(null);
-  const [artifactIdInput, setArtifactIdInput] = useState('');
   const [accessLevel, setAccessLevel] = useState<AccessLevel | null>(null);
   const [createTagName, setCreateTagName] = useState('');
   const [createTagArtifactId, setCreateTagArtifactId] = useState('');
   const [createTagLoading, setCreateTagLoading] = useState(false);
 
+  // UI state
+  const [showUploadModal, setShowUploadModal] = useState(false);
+  const [showCreateTagModal, setShowCreateTagModal] = useState(false);
+  const [openMenuId, setOpenMenuId] = useState<string | null>(null);
+  const [menuPosition, setMenuPosition] = useState<{ top: number; left: number } | null>(null);
+
   // Dependencies state
   const [selectedTag, setSelectedTag] = useState<TagDetail | null>(null);
   const [dependencies, setDependencies] = useState<Dependency[]>([]);
@@ -86,6 +91,13 @@ function PackagePage() {
   // Dependency graph modal state
   const [showGraph, setShowGraph] = useState(false);
 
+  // Dependencies modal state
+  const [showDepsModal, setShowDepsModal] = useState(false);
+
+  // Artifact ID modal state
+  const [showArtifactIdModal, setShowArtifactIdModal] = useState(false);
+  const [viewArtifactId, setViewArtifactId] = useState<string | null>(null);
+
   // Ensure file modal state
   const [showEnsureFile, setShowEnsureFile] = useState(false);
   const [ensureFileContent, setEnsureFileContent] = useState<string | null>(null);
@@ -96,6 +108,9 @@ function PackagePage() {
   // Derived permissions
   const canWrite = accessLevel === 'write' || accessLevel === 'admin';
 
+  // Detect system projects (convention: name starts with "_")
+  const isSystemProject = projectName?.startsWith('_') ?? false;
+
   // Get params from URL
   const page = parseInt(searchParams.get('page') || '1', 10);
   const search = searchParams.get('search') || '';
@@ -323,92 +338,212 @@ function PackagePage() {
     setSelectedTag(tag);
   };
 
-  const columns = [
-    {
-      key: 'name',
-      header: 'Tag',
-      sortable: true,
-      render: (t: TagDetail) => (
-        <strong
-          className={`tag-name-link ${selectedTag?.id === t.id ? 'selected' : ''}`}
-          onClick={() => handleTagSelect(t)}
-          style={{ cursor: 'pointer' }}
+  const handleMenuOpen = (e: React.MouseEvent, tagId: string) => {
+    e.stopPropagation();
+    if (openMenuId === tagId) {
+      setOpenMenuId(null);
+      setMenuPosition(null);
+    } else {
+      const rect = e.currentTarget.getBoundingClientRect();
+      setMenuPosition({ top: rect.bottom + 4, left: rect.right - 180 });
+      setOpenMenuId(tagId);
+    }
+  };
+
+  // System projects show Version first, regular projects show Tag first
+  const columns = isSystemProject
+    ? [
+        // System project columns: Version first, then Filename
+        {
+          key: 'version',
+          header: 'Version',
+          sortable: true,
+          render: (t: TagDetail) => (
+            <strong
+              className={`tag-name-link ${selectedTag?.id === t.id ? 'selected' : ''}`}
+              onClick={() => handleTagSelect(t)}
+              style={{ cursor: 'pointer' }}
+            >
+              <span className="version-badge">{t.version || t.name}</span>
+            </strong>
+          ),
+        },
+        {
+          key: 'artifact_original_name',
+          header: 'Filename',
+          className: 'cell-truncate',
+          render: (t: TagDetail) => (
+            <span title={t.artifact_original_name || t.name}>{t.artifact_original_name || t.name}</span>
+          ),
+        },
+        {
+          key: 'artifact_size',
+          header: 'Size',
+          render: (t: TagDetail) => <span>{formatBytes(t.artifact_size)}</span>,
+        },
+        {
+          key: 'created_at',
+          header: 'Cached',
+          sortable: true,
+          render: (t: TagDetail) => (
+            <span>{new Date(t.created_at).toLocaleDateString()}</span>
+          ),
+        },
+        {
+          key: 'actions',
+          header: '',
+          render: (t: TagDetail) => (
+            <div className="action-buttons">
+              <a
+                href={getDownloadUrl(projectName!, packageName!, t.name)}
+                className="btn btn-icon"
+                download
+                title="Download"
+              >
+                <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
+                  <path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4" />
+                  <polyline points="7 10 12 15 17 10" />
+                  <line x1="12" y1="15" x2="12" y2="3" />
+                </svg>
+              </a>
+              <button
+                className="btn btn-icon"
+                onClick={(e) => handleMenuOpen(e, t.id)}
+                title="More actions"
+              >
+                <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
+                  <circle cx="12" cy="12" r="1" />
+                  <circle cx="12" cy="5" r="1" />
+                  <circle cx="12" cy="19" r="1" />
+                </svg>
+              </button>
+            </div>
+          ),
+        },
+      ]
+    : [
+        // Regular project columns: Tag, Version, Filename
+        {
+          key: 'name',
+          header: 'Tag',
+          sortable: true,
+          render: (t: TagDetail) => (
+            <strong
+              className={`tag-name-link ${selectedTag?.id === t.id ? 'selected' : ''}`}
+              onClick={() => handleTagSelect(t)}
+              style={{ cursor: 'pointer' }}
+            >
+              {t.name}
+            </strong>
+          ),
+        },
+        {
+          key: 'version',
+          header: 'Version',
+          render: (t: TagDetail) => (
+            <span className="version-badge">{t.version || '—'}</span>
+          ),
+        },
+        {
+          key: 'artifact_original_name',
+          header: 'Filename',
+          className: 'cell-truncate',
+          render: (t: TagDetail) => (
+            <span title={t.artifact_original_name || undefined}>{t.artifact_original_name || '—'}</span>
+          ),
+        },
+        {
+          key: 'artifact_size',
+          header: 'Size',
+          render: (t: TagDetail) => <span>{formatBytes(t.artifact_size)}</span>,
+        },
+        {
+          key: 'created_at',
+          header: 'Created',
+          sortable: true,
+          render: (t: TagDetail) => (
+            <span title={`by ${t.created_by}`}>{new Date(t.created_at).toLocaleDateString()}</span>
+          ),
+        },
+        {
+          key: 'actions',
+          header: '',
+          render: (t: TagDetail) => (
+            <div className="action-buttons">
+              <a
+                href={getDownloadUrl(projectName!, packageName!, t.name)}
+                className="btn btn-icon"
+                download
+                title="Download"
+              >
+                <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
+                  <path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4" />
+                  <polyline points="7 10 12 15 17 10" />
+                  <line x1="12" y1="15" x2="12" y2="3" />
+                </svg>
+              </a>
+              <button
+                className="btn btn-icon"
+                onClick={(e) => handleMenuOpen(e, t.id)}
+                title="More actions"
+              >
+                <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
+                  <circle cx="12" cy="12" r="1" />
+                  <circle cx="12" cy="5" r="1" />
+                  <circle cx="12" cy="19" r="1" />
+                </svg>
+              </button>
+            </div>
+          ),
+        },
+      ];
+
+  // Find the tag for the open menu
+  const openMenuTag = tags.find(t => t.id === openMenuId);
+
+  // Close menu when clicking outside
+  const handleClickOutside = () => {
+    if (openMenuId) {
+      setOpenMenuId(null);
+      setMenuPosition(null);
+    }
+  };
+
+  // Render dropdown menu as a portal-like element
+  const renderActionMenu = () => {
+    if (!openMenuId || !menuPosition || !openMenuTag) return null;
+    const t = openMenuTag;
+    return (
+      <div
+        className="action-menu-backdrop"
+        onClick={handleClickOutside}
+      >
+        <div
+          className="action-menu-dropdown"
+          style={{ top: menuPosition.top, left: menuPosition.left }}
+          onClick={(e) => e.stopPropagation()}
         >
-          {t.name}
-        </strong>
-      ),
-    },
-    {
-      key: 'version',
-      header: 'Version',
-      render: (t: TagDetail) => (
-        <span className="version-badge">{t.version || '-'}</span>
-      ),
-    },
-    {
-      key: 'artifact_id',
-      header: 'Artifact ID',
-      render: (t: TagDetail) => (
-        <div className="artifact-id-cell">
-          <code className="artifact-id">{t.artifact_id.substring(0, 12)}...</code>
-          <CopyButton text={t.artifact_id} />
-        </div>
-      ),
-    },
-    {
-      key: 'artifact_size',
-      header: 'Size',
-      render: (t: TagDetail) => <span>{formatBytes(t.artifact_size)}</span>,
-    },
-    {
-      key: 'artifact_content_type',
-      header: 'Type',
-      render: (t: TagDetail) => (
-        <span className="content-type">{t.artifact_content_type || '-'}</span>
-      ),
-    },
-    {
-      key: 'artifact_original_name',
-      header: 'Filename',
-      className: 'cell-truncate',
-      render: (t: TagDetail) => (
-        <span title={t.artifact_original_name || undefined}>{t.artifact_original_name || '-'}</span>
-      ),
-    },
-    {
-      key: 'created_at',
-      header: 'Created',
-      sortable: true,
-      render: (t: TagDetail) => (
-        <div className="created-cell">
-          <span>{new Date(t.created_at).toLocaleString()}</span>
-          <span className="created-by">by {t.created_by}</span>
-        </div>
-      ),
-    },
-    {
-      key: 'actions',
-      header: 'Actions',
-      render: (t: TagDetail) => (
-        <div className="action-buttons">
-          <button
-            className="btn btn-secondary btn-small"
-            onClick={() => fetchEnsureFileForTag(t.name)}
-            title="View orchard.ensure file"
-          >
-            Ensure
+          <button onClick={() => { setViewArtifactId(t.artifact_id); setShowArtifactIdModal(true); setOpenMenuId(null); setMenuPosition(null); }}>
+            View Artifact ID
+          </button>
+          <button onClick={() => { navigator.clipboard.writeText(t.artifact_id); setOpenMenuId(null); setMenuPosition(null); }}>
+            Copy Artifact ID
+          </button>
+          <button onClick={() => { fetchEnsureFileForTag(t.name); setOpenMenuId(null); setMenuPosition(null); }}>
+            View Ensure File
+          </button>
+          {canWrite && !isSystemProject && (
+            <button onClick={() => { setCreateTagArtifactId(t.artifact_id); setShowCreateTagModal(true); setOpenMenuId(null); setMenuPosition(null); }}>
+              Create/Update Tag
+            </button>
+          )}
+          <button onClick={() => { handleTagSelect(t); setShowDepsModal(true); setOpenMenuId(null); setMenuPosition(null); }}>
+            View Dependencies
           </button>
-          <a
-            href={getDownloadUrl(projectName!, packageName!, t.name)}
-            className="btn btn-secondary btn-small"
-            download
-          >
-            Download
-          </a>
         </div>
-      ),
-    },
-  ];
+      </div>
+    );
+  };
 
   if (loading && !tagsData) {
     return <div className="loading">Loading...</div>;
@@ -451,6 +586,19 @@ function PackagePage() {
           <div className="page-header__title-row">
             <h1>{packageName}</h1>
             {pkg && <Badge variant="default">{pkg.format}</Badge>}
+            {user && canWrite && !isSystemProject && (
+              <button
+                className="btn btn-primary btn-small header-upload-btn"
+                onClick={() => setShowUploadModal(true)}
+              >
+                <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" style={{ marginRight: '6px' }}>
+                  <path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4" />
+                  <polyline points="17 8 12 3 7 8" />
+                  <line x1="12" y1="3" x2="12" y2="15" />
+                </svg>
+                Upload
+              </button>
+            )}
           </div>
           {pkg?.description && <p className="description">{pkg.description}</p>}
           <div className="page-header__meta">
@@ -468,14 +616,14 @@ function PackagePage() {
           </div>
           {pkg && (pkg.tag_count !== undefined || pkg.artifact_count !== undefined) && (
             <div className="package-header-stats">
-              {pkg.tag_count !== undefined && (
+              {!isSystemProject && pkg.tag_count !== undefined && (
                 <span className="stat-item">
                   <strong>{pkg.tag_count}</strong> tags
                 </span>
               )}
               {pkg.artifact_count !== undefined && (
                 <span className="stat-item">
-                  <strong>{pkg.artifact_count}</strong> artifacts
+                  <strong>{pkg.artifact_count}</strong> {isSystemProject ? 'versions' : 'artifacts'}
                 </span>
               )}
               {pkg.total_size !== undefined && pkg.total_size > 0 && (
@@ -483,7 +631,7 @@ function PackagePage() {
                   <strong>{formatBytes(pkg.total_size)}</strong> total
                 </span>
               )}
-              {pkg.latest_tag && (
+              {!isSystemProject && pkg.latest_tag && (
                 <span className="stat-item">
                   Latest: <strong className="accent">{pkg.latest_tag}</strong>
                 </span>
@@ -496,44 +644,9 @@ function PackagePage() {
       {error && <div className="error-message">{error}</div>}
       {uploadSuccess && <div className="success-message">{uploadSuccess}</div>}
 
-      {user && (
-        <div className="upload-section card">
-          <h3>Upload Artifact</h3>
-          {canWrite ? (
-            <div className="upload-form">
-              <div className="form-group">
-                <label htmlFor="upload-tag">Tag (optional)</label>
-                <input
-                  id="upload-tag"
-                  type="text"
-                  value={uploadTag}
-                  onChange={(e) => setUploadTag(e.target.value)}
-                  placeholder="v1.0.0, latest, stable..."
-                />
-              </div>
-              <DragDropUpload
-                projectName={projectName!}
-                packageName={packageName!}
-                tag={uploadTag || undefined}
-                onUploadComplete={handleUploadComplete}
-                onUploadError={handleUploadError}
-              />
-            </div>
-          ) : (
-            <DragDropUpload
-              projectName={projectName!}
-              packageName={packageName!}
-              disabled={true}
-              disabledReason="You have read-only access to this project and cannot upload artifacts."
-              onUploadComplete={handleUploadComplete}
-              onUploadError={handleUploadError}
-            />
-          )}
-        </div>
-      )}
 
       <div className="section-header">
-        <h2>Tags / Versions</h2>
+        <h2>{isSystemProject ? 'Versions' : 'Tags / Versions'}</h2>
       </div>
 
       <div className="list-controls">
@@ -577,110 +690,6 @@ function PackagePage() {
         />
       )}
 
-      {/* Dependencies Section */}
-      {tags.length > 0 && (
-        <div className="dependencies-section card">
-          <div className="dependencies-header">
-            <h3>Dependencies</h3>
-            <div className="dependencies-controls">
-              {selectedTag && (
-                <>
-                  <button
-                    className="btn btn-secondary btn-small"
-                    onClick={fetchEnsureFile}
-                    disabled={ensureFileLoading}
-                    title="View orchard.ensure file"
-                  >
-                    <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" style={{ marginRight: '6px' }}>
-                      <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path>
-                      <polyline points="14 2 14 8 20 8"></polyline>
-                      <line x1="16" y1="13" x2="8" y2="13"></line>
-                      <line x1="16" y1="17" x2="8" y2="17"></line>
-                      <polyline points="10 9 9 9 8 9"></polyline>
-                    </svg>
-                    {ensureFileLoading ? 'Loading...' : 'View Ensure File'}
-                  </button>
-                  <button
-                    className="btn btn-secondary btn-small"
-                    onClick={() => setShowGraph(true)}
-                    title="View full dependency tree"
-                  >
-                    <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" style={{ marginRight: '6px' }}>
-                      <circle cx="12" cy="12" r="3"></circle>
-                      <circle cx="4" cy="4" r="2"></circle>
-                      <circle cx="20" cy="4" r="2"></circle>
-                      <circle cx="4" cy="20" r="2"></circle>
-                      <circle cx="20" cy="20" r="2"></circle>
-                      <line x1="9.5" y1="9.5" x2="5.5" y2="5.5"></line>
-                      <line x1="14.5" y1="9.5" x2="18.5" y2="5.5"></line>
-                      <line x1="9.5" y1="14.5" x2="5.5" y2="18.5"></line>
-                      <line x1="14.5" y1="14.5" x2="18.5" y2="18.5"></line>
-                    </svg>
-                    View Graph
-                  </button>
-                </>
-              )}
-            </div>
-          </div>
-          <div className="dependencies-tag-select">
-            {selectedTag && (
-              <select
-                className="tag-selector"
-                value={selectedTag.id}
-                onChange={(e) => {
-                  const tag = tags.find(t => t.id === e.target.value);
-                  if (tag) setSelectedTag(tag);
-                }}
-              >
-                {tags.map(t => (
-                  <option key={t.id} value={t.id}>
-                    {t.name}{t.version ? ` (${t.version})` : ''}
-                  </option>
-                ))}
-              </select>
-            )}
-          </div>
-
-          {depsLoading ? (
-            <div className="deps-loading">Loading dependencies...</div>
-          ) : depsError ? (
-            <div className="deps-error">{depsError}</div>
-          ) : dependencies.length === 0 ? (
-            <div className="deps-empty">
-              {selectedTag ? (
-                <span><strong>{selectedTag.name}</strong> has no dependencies</span>
-              ) : (
-                <span>No dependencies</span>
-              )}
-            </div>
-          ) : (
-            <div className="deps-list">
-              <div className="deps-summary">
-                <strong>{selectedTag?.name}</strong> has {dependencies.length} {dependencies.length === 1 ? 'dependency' : 'dependencies'}:
-              </div>
-              <ul className="deps-items">
-                {dependencies.map((dep) => (
-                  <li key={dep.id} className="dep-item">
-                    <Link
-                      to={`/project/${dep.project}/${dep.package}`}
-                      className="dep-link"
-                    >
-                      {dep.project}/{dep.package}
-                    </Link>
-                    <span className="dep-constraint">
-                      @ {dep.version || dep.tag}
-                    </span>
-                    <span className="dep-status dep-status--ok" title="Package exists">
-                      &#10003;
-                    </span>
-                  </li>
-                ))}
-              </ul>
-            </div>
-          )}
-        </div>
-      )}
-
       {/* Used By (Reverse Dependencies) Section */}
       <div className="used-by-section card">
         <h3>Used By</h3>
@@ -737,78 +746,6 @@ function PackagePage() {
         )}
       </div>
 
-      <div className="download-by-id-section card">
-        <h3>Download by Artifact ID</h3>
-        <div className="download-by-id-form">
-          <input
-            type="text"
-            value={artifactIdInput}
-            onChange={(e) => setArtifactIdInput(e.target.value.toLowerCase().replace(/[^a-f0-9]/g, '').slice(0, 64))}
-            placeholder="Enter SHA256 artifact ID (64 hex characters)"
-            className="artifact-id-input"
-          />
-          <a
-            href={artifactIdInput.length === 64 ? getDownloadUrl(projectName!, packageName!, `artifact:${artifactIdInput}`) : '#'}
-            className={`btn btn-primary ${artifactIdInput.length !== 64 ? 'btn-disabled' : ''}`}
-            download
-            onClick={(e) => {
-              if (artifactIdInput.length !== 64) {
-                e.preventDefault();
-              }
-            }}
-          >
-            Download
-          </a>
-        </div>
-        {artifactIdInput.length > 0 && artifactIdInput.length !== 64 && (
-          <p className="validation-hint">Artifact ID must be exactly 64 hex characters ({artifactIdInput.length}/64)</p>
-        )}
-      </div>
-
-      {user && canWrite && (
-        <div className="create-tag-section card">
-          <h3>Create / Update Tag</h3>
-          <p className="section-description">Point a tag at any existing artifact by its ID</p>
-          <form onSubmit={handleCreateTag} className="create-tag-form">
-            <div className="form-row">
-              <div className="form-group">
-                <label htmlFor="create-tag-name">Tag Name</label>
-                <input
-                  id="create-tag-name"
-                  type="text"
-                  value={createTagName}
-                  onChange={(e) => setCreateTagName(e.target.value)}
-                  placeholder="latest, stable, v1.0.0..."
-                  disabled={createTagLoading}
-                />
-              </div>
-              <div className="form-group form-group--wide">
-                <label htmlFor="create-tag-artifact">Artifact ID</label>
-                <input
-                  id="create-tag-artifact"
-                  type="text"
-                  value={createTagArtifactId}
-                  onChange={(e) => setCreateTagArtifactId(e.target.value.toLowerCase().replace(/[^a-f0-9]/g, '').slice(0, 64))}
-                  placeholder="SHA256 hash (64 hex characters)"
-                  className="artifact-id-input"
-                  disabled={createTagLoading}
-                />
-              </div>
-              <button
-                type="submit"
-                className="btn btn-primary"
-                disabled={createTagLoading || !createTagName.trim() || createTagArtifactId.length !== 64}
-              >
-                {createTagLoading ? 'Creating...' : 'Create Tag'}
-              </button>
-            </div>
-            {createTagArtifactId.length > 0 && createTagArtifactId.length !== 64 && (
-              <p className="validation-hint">Artifact ID must be exactly 64 hex characters ({createTagArtifactId.length}/64)</p>
-            )}
-          </form>
-        </div>
-      )}
-
       <div className="usage-section card">
         <h3>Usage</h3>
         <p>Download artifacts using:</p>
@@ -831,6 +768,118 @@ function PackagePage() {
         />
       )}
 
+      {/* Upload Modal */}
+      {showUploadModal && (
+        <div className="modal-overlay" onClick={() => setShowUploadModal(false)}>
+          <div className="upload-modal" onClick={(e) => e.stopPropagation()}>
+            <div className="modal-header">
+              <h3>Upload Artifact</h3>
+              <button
+                className="modal-close"
+                onClick={() => setShowUploadModal(false)}
+                title="Close"
+              >
+                <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
+                  <line x1="18" y1="6" x2="6" y2="18"></line>
+                  <line x1="6" y1="6" x2="18" y2="18"></line>
+                </svg>
+              </button>
+            </div>
+            <div className="modal-body">
+              <div className="form-group">
+                <label htmlFor="upload-tag">Tag (optional)</label>
+                <input
+                  id="upload-tag"
+                  type="text"
+                  value={uploadTag}
+                  onChange={(e) => setUploadTag(e.target.value)}
+                  placeholder="v1.0.0, latest, stable..."
+                />
+              </div>
+              <DragDropUpload
+                projectName={projectName!}
+                packageName={packageName!}
+                tag={uploadTag || undefined}
+                onUploadComplete={(result) => {
+                  handleUploadComplete(result);
+                  setShowUploadModal(false);
+                  setUploadTag('');
+                }}
+                onUploadError={handleUploadError}
+              />
+            </div>
+          </div>
+        </div>
+      )}
+
+      {/* Create/Update Tag Modal */}
+      {showCreateTagModal && (
+        <div className="modal-overlay" onClick={() => setShowCreateTagModal(false)}>
+          <div className="create-tag-modal" onClick={(e) => e.stopPropagation()}>
+            <div className="modal-header">
+              <h3>Create / Update Tag</h3>
+              <button
+                className="modal-close"
+                onClick={() => { setShowCreateTagModal(false); setCreateTagName(''); setCreateTagArtifactId(''); }}
+                title="Close"
+              >
+                <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
+                  <line x1="18" y1="6" x2="6" y2="18"></line>
+                  <line x1="6" y1="6" x2="18" y2="18"></line>
+                </svg>
+              </button>
+            </div>
+            <div className="modal-body">
+              <p className="modal-description">Point a tag at an artifact by its ID</p>
+              <form onSubmit={(e) => { handleCreateTag(e); setShowCreateTagModal(false); }}>
+                <div className="form-group">
+                  <label htmlFor="modal-tag-name">Tag Name</label>
+                  <input
+                    id="modal-tag-name"
+                    type="text"
+                    value={createTagName}
+                    onChange={(e) => setCreateTagName(e.target.value)}
+                    placeholder="latest, stable, v1.0.0..."
+                    disabled={createTagLoading}
+                  />
+                </div>
+                <div className="form-group">
+                  <label htmlFor="modal-artifact-id">Artifact ID</label>
+                  <input
+                    id="modal-artifact-id"
+                    type="text"
+                    value={createTagArtifactId}
+                    onChange={(e) => setCreateTagArtifactId(e.target.value.toLowerCase().replace(/[^a-f0-9]/g, '').slice(0, 64))}
+                    placeholder="SHA256 hash (64 hex characters)"
+                    className="artifact-id-input"
+                    disabled={createTagLoading}
+                  />
+                  {createTagArtifactId.length > 0 && createTagArtifactId.length !== 64 && (
+                    <p className="validation-hint">{createTagArtifactId.length}/64 characters</p>
+                  )}
+                </div>
+                <div className="modal-actions">
+                  <button
+                    type="button"
+                    className="btn btn-secondary"
+                    onClick={() => { setShowCreateTagModal(false); setCreateTagName(''); setCreateTagArtifactId(''); }}
+                  >
+                    Cancel
+                  </button>
+                  <button
+                    type="submit"
+                    className="btn btn-primary"
+                    disabled={createTagLoading || !createTagName.trim() || createTagArtifactId.length !== 64}
+                  >
+                    {createTagLoading ? 'Creating...' : 'Create Tag'}
+                  </button>
+                </div>
+              </form>
+            </div>
+          </div>
+        </div>
+      )}
+
       {/* Ensure File Modal */}
       {showEnsureFile && (
         <div className="modal-overlay" onClick={() => setShowEnsureFile(false)}>
@@ -872,6 +921,107 @@ function PackagePage() {
           </div>
         </div>
       )}
+
+      {/* Dependencies Modal */}
+      {showDepsModal && selectedTag && (
+        <div className="modal-overlay" onClick={() => setShowDepsModal(false)}>
+          <div className="deps-modal" onClick={(e) => e.stopPropagation()}>
+            <div className="modal-header">
+              <h3>Dependencies for {selectedTag.version || selectedTag.name}</h3>
+              <button
+                className="modal-close"
+                onClick={() => setShowDepsModal(false)}
+                title="Close"
+              >
+                <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
+                  <line x1="18" y1="6" x2="6" y2="18"></line>
+                  <line x1="6" y1="6" x2="18" y2="18"></line>
+                </svg>
+              </button>
+            </div>
+            <div className="modal-body">
+              <div className="deps-modal-controls">
+                <button
+                  className="btn btn-secondary btn-small"
+                  onClick={fetchEnsureFile}
+                  disabled={ensureFileLoading}
+                >
+                  View Ensure File
+                </button>
+                <button
+                  className="btn btn-secondary btn-small"
+                  onClick={() => { setShowDepsModal(false); setShowGraph(true); }}
+                >
+                  View Graph
+                </button>
+              </div>
+              {depsLoading ? (
+                <div className="deps-loading">Loading dependencies...</div>
+              ) : depsError ? (
+                <div className="deps-error">{depsError}</div>
+              ) : dependencies.length === 0 ? (
+                <div className="deps-empty">No dependencies</div>
+              ) : (
+                <div className="deps-list">
+                  <div className="deps-summary">
+                    {dependencies.length} {dependencies.length === 1 ? 'dependency' : 'dependencies'}:
+                  </div>
+                  <ul className="deps-items">
+                    {dependencies.map((dep) => (
+                      <li key={dep.id} className="dep-item">
+                        <Link
+                          to={`/project/${dep.project}/${dep.package}`}
+                          className="dep-link"
+                          onClick={() => setShowDepsModal(false)}
+                        >
+                          {dep.project}/{dep.package}
+                        </Link>
+                        <span className="dep-constraint">
+                          @ {dep.version || dep.tag}
+                        </span>
+                        <span className="dep-status dep-status--ok" title="Package exists">
+                          &#10003;
+                        </span>
+                      </li>
+                    ))}
+                  </ul>
+                </div>
+              )}
+            </div>
+          </div>
+        </div>
+      )}
+
+      {/* Artifact ID Modal */}
+      {showArtifactIdModal && viewArtifactId && (
+        <div className="modal-overlay" onClick={() => setShowArtifactIdModal(false)}>
+          <div className="artifact-id-modal" onClick={(e) => e.stopPropagation()}>
+            <div className="modal-header">
+              <h3>Artifact ID</h3>
+              <button
+                className="modal-close"
+                onClick={() => setShowArtifactIdModal(false)}
+                title="Close"
+              >
+                <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
+                  <line x1="18" y1="6" x2="6" y2="18"></line>
+                  <line x1="6" y1="6" x2="18" y2="18"></line>
+                </svg>
+              </button>
+            </div>
+            <div className="modal-body">
+              <p className="modal-description">SHA256 hash identifying this artifact:</p>
+              <div className="artifact-id-display">
+                <code>{viewArtifactId}</code>
+                <CopyButton text={viewArtifactId} />
+              </div>
+            </div>
+          </div>
+        </div>
+      )}
+
+      {/* Action Menu Dropdown */}
+      {renderActionMenu()}
     </div>
   );
 }

frontend/src/pages/ProjectPage.tsx

@@ -214,7 +214,7 @@ function ProjectPage() {
           </div>
         </div>
         <div className="page-header__actions">
-          {canAdmin && !project.team_id && (
+          {canAdmin && !project.team_id && !project.is_system && (
             <button
               className="btn btn-secondary"
               onClick={() => navigate(`/project/${projectName}/settings`)}
@@ -227,11 +227,11 @@ function ProjectPage() {
               Settings
             </button>
           )}
-          {canWrite ? (
+          {canWrite && !project.is_system ? (
             <button className="btn btn-primary" onClick={() => setShowForm(!showForm)}>
               {showForm ? 'Cancel' : '+ New Package'}
             </button>
-          ) : user ? (
+          ) : user && !project.is_system ? (
             <span className="text-muted" title="You have read-only access to this project">
               Read-only access
             </span>
@@ -294,18 +294,20 @@ function ProjectPage() {
           placeholder="Filter packages..."
           className="list-controls__search"
         />
-        <select
-          className="list-controls__select"
-          value={format}
-          onChange={(e) => handleFormatChange(e.target.value)}
-        >
-          <option value="">All formats</option>
-          {FORMAT_OPTIONS.map((f) => (
-            <option key={f} value={f}>
-              {f}
-            </option>
-          ))}
-        </select>
+        {!project?.is_system && (
+          <select
+            className="list-controls__select"
+            value={format}
+            onChange={(e) => handleFormatChange(e.target.value)}
+          >
+            <option value="">All formats</option>
+            {FORMAT_OPTIONS.map((f) => (
+              <option key={f} value={f}>
+                {f}
+              </option>
+            ))}
+          </select>
+        )}
       </div>
 
       {hasActiveFilters && (
@@ -341,19 +343,19 @@ function ProjectPage() {
               className: 'cell-description',
               render: (pkg) => pkg.description || '—',
             },
-            {
+            ...(!project?.is_system ? [{
               key: 'format',
               header: 'Format',
-              render: (pkg) => <Badge variant="default">{pkg.format}</Badge>,
-            },
-            {
+              render: (pkg: Package) => <Badge variant="default">{pkg.format}</Badge>,
+            }] : []),
+            ...(!project?.is_system ? [{
               key: 'tag_count',
               header: 'Tags',
-              render: (pkg) => pkg.tag_count ?? '—',
-            },
+              render: (pkg: Package) => pkg.tag_count ?? '—',
+            }] : []),
             {
               key: 'artifact_count',
-              header: 'Artifacts',
+              header: project?.is_system ? 'Versions' : 'Artifacts',
               render: (pkg) => pkg.artifact_count ?? '—',
             },
             {
@@ -362,12 +364,12 @@ function ProjectPage() {
               render: (pkg) =>
                 pkg.total_size !== undefined && pkg.total_size > 0 ? formatBytes(pkg.total_size) : '—',
             },
-            {
+            ...(!project?.is_system ? [{
               key: 'latest_tag',
               header: 'Latest',
-              render: (pkg) =>
+              render: (pkg: Package) =>
                 pkg.latest_tag ? <strong style={{ color: 'var(--accent-primary)' }}>{pkg.latest_tag}</strong> : '—',
-            },
+            }] : []),
             {
               key: 'created_at',
               header: 'Created',

frontend/src/types.ts

@@ -515,7 +515,6 @@ export interface UpstreamSource {
   source_type: SourceType;
   url: string;
   enabled: boolean;
-  is_public: boolean;
   auth_type: AuthType;
   username: string | null;
   has_password: boolean;
@@ -531,7 +530,6 @@ export interface UpstreamSourceCreate {
   source_type: SourceType;
   url: string;
   enabled?: boolean;
-  is_public?: boolean;
   auth_type?: AuthType;
   username?: string;
   password?: string;
@@ -544,7 +542,6 @@ export interface UpstreamSourceUpdate {
   source_type?: SourceType;
   url?: string;
   enabled?: boolean;
-  is_public?: boolean;
   auth_type?: AuthType;
   username?: string;
   password?: string;
@@ -560,18 +557,3 @@ export interface UpstreamSourceTestResult {
   source_id: string;
   source_name: string;
 }
-
-// Cache Settings types
-export interface CacheSettings {
-  allow_public_internet: boolean;
-  auto_create_system_projects: boolean;
-  allow_public_internet_env_override: boolean | null;
-  auto_create_system_projects_env_override: boolean | null;
-  created_at: string | null;
-  updated_at: string | null;
-}
-
-export interface CacheSettingsUpdate {
-  allow_public_internet?: boolean;
-  auto_create_system_projects?: boolean;
-}

helm/orchard/templates/deployment.yaml

@@ -128,6 +128,10 @@ spec:
               value: {{ .Values.orchard.rateLimit.login | quote }}
             {{- end }}
             {{- end }}
+            {{- if .Values.orchard.purgeSeedData }}
+            - name: ORCHARD_PURGE_SEED_DATA
+              value: "true"
+            {{- end }}
             {{- if .Values.orchard.database.poolSize }}
             - name: ORCHARD_DATABASE_POOL_SIZE
               value: {{ .Values.orchard.database.poolSize | quote }}

helm/orchard/values-stage.yaml

@@ -91,6 +91,7 @@ affinity: {}
 # Orchard server configuration
 orchard:
   env: "development"  # Allows seed data for testing
+  purgeSeedData: true  # Remove public seed data (npm-public, pypi-public, etc.)
   server:
     host: "0.0.0.0"
     port: 8080