feat(BT-003B): add event comparison drilldown

docs/roadmap/ROADMAP.yaml

@@ -13,7 +13,7 @@ notes:
   - Pre-alpha policy: we may cut or replace old features without backward compatibility until alpha is declared.
   - Alpha migration policy: once alpha is declared, compatibility only needs to move forward; backward migrations are not required.
 priority_queue:
-  - BT-003B
+  - DEV-DOCKER-001
   - PORT-003
   - BT-002
   - BT-001C
@@ -41,14 +41,15 @@ states:
     - DATA-002A
     - DATA-001A
     - OPS-001
+    - DEV-DOCKER-001
     - PORT-003
     - EXEC-001
     - EXEC-002
     - BT-002
     - BT-003
-    - BT-003B
     - BT-001C
-  in_progress: []
+  in_progress:
+    - BT-003B
   done:
     - DATA-001
     - DATA-002

docs/roadmap/backlog/BT-003B-event-comparison-drilldown.yaml

@@ -1,14 +0,0 @@
-id: BT-003B
-title: Event Comparison Drilldown
-status: backlog
-priority: P1
-effort: M
-depends_on:
-  - BT-003A
-tags: [backtesting, ui]
-summary: Explain why one ranked strategy beat another on the event comparison page.
-acceptance_criteria:
-  - Selecting a ranked strategy shows daily path details.
-  - UI exposes margin-call days, payoff realized, hedge cost, and final equity.
-  - Worst LTV point and breach dates are highlighted.
-  - Browser test verifies drilldown content updates when selecting a ranked result.

docs/roadmap/backlog/DEV-DOCKER-001-local-bind-mount-integrity.yaml

@@ -0,0 +1,17 @@
+id: DEV-DOCKER-001
+title: Local Docker Bind Mount Integrity
+status: backlog
+priority: P0
+effort: S
+depends_on: []
+tags:
+  - devops
+  - docker
+  - local-dev
+summary: Restore trustworthy local Docker validation by fixing the current empty bind-mount/import failure for `./app -> /app/app` under the local OrbStack workflow.
+acceptance_criteria:
+  - `docker compose up -d --build` starts the local stack cleanly.
+  - `docker compose ps` shows the app container healthy instead of restart-looping.
+  - `docker compose run --rm --entrypoint python app -c 'import app.main'` succeeds.
+  - Inside the app container, `/app/app` contains the repository's actual application files.
+  - `/health` and at least one changed route can be validated against the Docker-served app, not only a direct local uvicorn process.

docs/roadmap/in-progress/BT-003B-event-comparison-drilldown.yaml

@@ -0,0 +1,20 @@
+id: BT-003B
+title: Event Comparison Drilldown
+status: in_progress
+priority: P1
+effort: M
+depends_on:
+  - BT-003A
+tags:
+  - backtesting
+  - ui
+summary: Explain why one ranked strategy beat another on the event comparison page.
+acceptance_criteria:
+  - Selecting a ranked strategy shows daily path details.
+  - UI exposes margin-call days, payoff realized, hedge cost, and final equity.
+  - Worst LTV point and breach dates are highlighted.
+  - Browser test verifies drilldown content updates when selecting a ranked result.
+progress_notes:
+  - The drilldown UI and service models are implemented in `app/pages/event_comparison.py` and `app/services/event_comparison_ui.py`.
+  - Focused unit coverage is green and direct local-browser validation against a fresh local uvicorn process succeeded.
+  - Closure is waiting on the local Docker validation path because `docker compose up -d --build` currently surfaces an environment-specific empty bind-mount/import failure for `./app -> /app/app`.