feat(mid-section-defect): full-line bidirectional defect trace center with dual query mode

Transform /mid-section-defect from TMTT-only backward analysis into a full-line
bidirectional defect traceability center supporting all detection stations.

Key changes:
- Parameterized station detection: any workcenter group as detection station
- Bidirectional tracing: backward (upstream attribution) + forward (downstream reject rates)
- Dual query mode: date range OR LOT/工單/WAFER container-based seed resolution
- Multi-select filters for upstream station, equipment model (RESOURCEFAMILYNAME), and loss reasons
- Progressive 3-stage trace pipeline (seed-resolve → lineage → events) with streaming UI
- Equipment model lookup via resource cache instead of SPECNAME
- Session caching, auto-refresh, searchable MultiSelect with fuzzy matching
- Remove legacy tmtt-defect module (fully superseded)
- Archive openspec change artifacts

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/test_app_factory.py

@@ -58,7 +58,6 @@ class AppFactoryTests(unittest.TestCase):
             "/reject-history",
             "/excel-query",
             "/query-tool",
-            "/tmtt-defect",
             "/api/wip/overview/summary",
             "/api/wip/overview/matrix",
             "/api/wip/overview/hold",
@@ -74,7 +73,6 @@ class AppFactoryTests(unittest.TestCase):
             "/api/portal/navigation",
             "/api/excel-query/upload",
             "/api/query-tool/resolve",
-            "/api/tmtt-defect/analysis",
             "/api/reject-history/summary",
         }
         missing = expected - rules