Add tags prominence and SIM source grouping features

Database changes:
- Add sim_source_id column to artifacts table for grouping multiple artifacts
- Create Alembic migration (001_add_sim_source_id) for schema update
- Add Alembic env.py for migration support with environment-based DB URLs

API enhancements:
- Add sim_source_id parameter to upload endpoint
- Add sim_source_id filter to query endpoint
- Add new /grouped-by-sim-source endpoint for getting artifacts by group
- Update all API documentation to include sim_source_id

UI improvements:
- Make tags required field and more prominent in upload form
- Add tags display directly in artifacts table (below filename)
- Add SIM Source ID field in upload form with helper text for grouping
- Update table to show sim_source_id (falls back to test_suite if null)
- Tags now displayed as inline badges in main table view

Seed data updates:
- Generate sim_source_id for 70% of artifacts to demonstrate grouping
- Multiple artifacts can share same sim_source_id
- Improved seed data variety with tag combinations

Features:
- Tags are now prominently displayed in both table and detail views
- Multiple artifacts can be grouped by SIM source ID
- Users can filter/query by sim_source_id
- Backward compatible - existing artifacts without sim_source_id still work

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/api/artifacts.py

@@ -1,7 +1,7 @@
 from fastapi import APIRouter, UploadFile, File, Form, Depends, HTTPException, Query
 from fastapi.responses import StreamingResponse
 from sqlalchemy.orm import Session
-from typing import List, Optional
+from typing import List, Optional, Dict
 import uuid
 import json
 import io
@@ -36,6 +36,7 @@ async def upload_artifact(
     test_suite: Optional[str] = Form(None),
     test_config: Optional[str] = Form(None),
     test_result: Optional[str] = Form(None),
+    sim_source_id: Optional[str] = Form(None),
     custom_metadata: Optional[str] = Form(None),
     description: Optional[str] = Form(None),
     tags: Optional[str] = Form(None),
@@ -51,6 +52,7 @@ async def upload_artifact(
     - **test_suite**: Test suite identifier
     - **test_config**: JSON string of test configuration
     - **test_result**: Test result (pass, fail, skip, error)
+    - **sim_source_id**: SIM source ID to group multiple artifacts
     - **custom_metadata**: JSON string of additional metadata
     - **description**: Text description of the artifact
     - **tags**: JSON array of tags (as string)
@@ -88,6 +90,7 @@ async def upload_artifact(
             test_suite=test_suite,
             test_config=test_config_dict,
             test_result=test_result,
+            sim_source_id=sim_source_id,
             custom_metadata=metadata_dict,
             description=description,
             tags=tags_list,
@@ -194,6 +197,7 @@ async def query_artifacts(query: ArtifactQuery, db: Session = Depends(get_db)):
     - **test_name**: Filter by test name
     - **test_suite**: Filter by test suite
     - **test_result**: Filter by test result
+    - **sim_source_id**: Filter by SIM source ID
     - **tags**: Filter by tags (must contain all specified tags)
     - **start_date**: Filter by creation date (from)
     - **end_date**: Filter by creation date (to)
@@ -212,6 +216,8 @@ async def query_artifacts(query: ArtifactQuery, db: Session = Depends(get_db)):
         q = q.filter(Artifact.test_suite == query.test_suite)
     if query.test_result:
         q = q.filter(Artifact.test_result == query.test_result)
+    if query.sim_source_id:
+        q = q.filter(Artifact.sim_source_id == query.sim_source_id)
     if query.tags:
         for tag in query.tags:
             q = q.filter(Artifact.tags.contains([tag]))
@@ -240,3 +246,20 @@ async def list_artifacts(
         Artifact.created_at.desc()
     ).offset(offset).limit(limit).all()
     return artifacts
+
+
+@router.get("/grouped-by-sim-source", response_model=Dict[str, List[ArtifactResponse]])
+async def get_artifacts_grouped_by_sim_source(
+    db: Session = Depends(get_db)
+):
+    """Get all artifacts grouped by SIM source ID"""
+    from collections import defaultdict
+
+    artifacts = db.query(Artifact).order_by(Artifact.created_at.desc()).all()
+    grouped = defaultdict(list)
+
+    for artifact in artifacts:
+        sim_source = artifact.sim_source_id or "ungrouped"
+        grouped[sim_source].append(artifact)
+
+    return dict(grouped)