Phase 4: task-to-goal integration (Vision side)

Build the boundary the ImpactFlow core time-tracker plugs into. A task maps to
a foundation — one of the six stable profile elements (love, strength, mission,
vocation, short_term, long_term) — so the tracker can ask "which goal does this
build toward?" and post the answer back to Vision.

- Models + migration 006: task_mapping (one row per logged time entry).
- app/services/foundations.py: the six foundations + a pure, testable
  work-pattern aggregator (rollup) and a plain-language summary.
- app/routers/integration.py (user-scoped; tracker calls as the user or via
  X-API-Key): GET /foundations, POST/GET /task-mappings,
  GET /work-patterns?days=N (per-foundation minutes/share/neglected).
- Reminder engine now pulls from real work patterns: CheckinCoach takes an
  optional work-pattern summary (last 14 days) and reflects where time has gone
  against the person's own words — an observation, never a verdict.
- Frontend: dashboard.html (time per foundation + neglected); linked from
  profile.html.

Documented the core-tracker integration contract in the README. Phase 4
completes the Vision module's roadmap on the Discovery side; the core tracker
integrates by calling these endpoints.

Tests: 86 passing (added pure-aggregator, integration-endpoint, and
work-pattern-into-check-in tests; run in-container).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/schemas.py

@@ -150,6 +150,50 @@ class RunCheckinsResponse(BaseModel):
     generated: int
 
 
+# -- Phase 4: task-to-goal integration ---------------------------------------
+
+
+class FoundationOut(BaseModel):
+    key: str
+    label: str
+    text: Optional[str] = None
+
+
+class TaskMappingCreate(BaseModel):
+    external_task_id: str
+    foundation: str
+    minutes: int = 0
+    task_label: str = ""
+    # When the work happened; defaults to now if omitted.
+    occurred_at: Optional[datetime] = None
+
+
+class TaskMappingOut(BaseModel):
+    id: str
+    external_task_id: str
+    task_label: Optional[str] = None
+    foundation: str
+    minutes: int
+    occurred_at: datetime
+    created_at: datetime
+
+
+class FoundationPattern(BaseModel):
+    foundation: str
+    label: str
+    minutes: int
+    task_count: int
+    last_at: Optional[datetime] = None
+    share: float
+
+
+class WorkPatternsOut(BaseModel):
+    window_days: int
+    total_minutes: int
+    by_foundation: list[FoundationPattern]
+    neglected: list[str]
+
+
 class ConversationResponse(BaseModel):
     id: str
     user_id: str