chore: auto-commit (5 archivos)

- app.md
- backend/chat.go
- Dockerfile
- docker-compose.yml
- traefik-dynamic.yml

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app.md

@@ -43,6 +43,32 @@ uses_types:
 framework: "net/http + vite + react + mantine + dnd-kit"
 entry_point: "backend/main.go"
 dir_path: "apps/kanban"
+
+# Validacion end-to-end (fase 4 del bucle reactivo). Ver issue 0068.
+e2e_checks:
+  - id: build_frontend
+    cmd: "cd frontend && pnpm install --frozen-lockfile && pnpm build"
+    timeout_s: 180
+    expect_exit: 0
+  - id: build_backend
+    cmd: "CGO_ENABLED=1 go build -tags fts5 -o kanban ."
+    timeout_s: 120
+    expect_exit: 0
+  - id: migrations_apply
+    cmd: "rm -f /tmp/kanban_e2e.db && ./kanban --port 0 --db /tmp/kanban_e2e.db --migrate-only"
+    timeout_s: 15
+    expect_exit: 0
+  - id: migrations_schema
+    cmd: "sqlite3 /tmp/kanban_e2e.db 'SELECT version FROM schema_migrations ORDER BY version;'"
+    expect_stdout_contains: "1"
+  - id: smoke_api
+    cmd: "./kanban --port 8195 --db /tmp/kanban_e2e.db &"
+    health: "http://127.0.0.1:8195/api/board"
+    timeout_s: 10
+  - id: tests_go
+    cmd: "go test -tags fts5 -count=1 ./..."
+    timeout_s: 120
+    expect_exit: 0
 ---
 
 ## Arquitectura