add pipeline job management with /jobs pages and per-step output viewer

- Pipeline jobs now persist to DB with progress tracking and cost accumulation
- Jobs survive WebSocket disconnects with in-memory event buffer replay
- New /jobs list page with search, status badges, and cost display
- New /jobs/:id detail page with live WebSocket attachment and REST fallback
- Two-column layout using WorkspaceLayout for resizable steps/output panels
- Streaming messages tagged with stepIndex/iterationLabel for per-step output grouping
- TaskRunnerModal links to job detail page once job is created
- Dock entry added for Jobs page

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

src/databases/officer_db/migrations/meta/_journal.json

@@ -22,6 +22,13 @@
       "when": 1772985087180,
       "tag": "0002_cute_doorman",
       "breakpoints": true
+    },
+    {
+      "idx": 3,
+      "version": "7",
+      "when": 1773040399200,
+      "tag": "0003_perpetual_james_howlett",
+      "breakpoints": true
     }
   ]
 }