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- Remove legacy tmtt-defect module (fully superseded)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>

src/mes_dashboard/app.py

@@ -879,14 +879,6 @@ def create_app(config_name: str | None = None) -> Flask:
             200,
         ))
 
-    @app.route('/tmtt-defect')
-    def tmtt_defect_page():
-        """TMTT printing & lead form defect analysis page."""
-        canonical_redirect = maybe_redirect_to_canonical_shell('/tmtt-defect')
-        if canonical_redirect is not None:
-            return canonical_redirect
-        return render_template('tmtt_defect.html')
-
     @app.route('/qc-gate')
     def qc_gate_page():
         """QC-GATE status report served as pure Vite HTML output."""