Complete Phase 1: goals, cookie auth, profile editing

Close the remaining Phase 1 DoD gaps and reconcile the browser flow with
the auth layer.

Goals (5 -> 7 prompts):
- Add near-term (6-12mo) and long-term (3-5yr) goal prompts; collect raw
  text on the conversation and store AI-articulated goal summaries on the
  profile. Extractor articulates the person's own stated goals (mirror,
  not compass) and never fabricates. Alembic 003 adds the four columns.

Cookie-based browser sessions (fixes frontend<->auth desync):
- OAuth callback now sets httpOnly session cookies and redirects into the
  app instead of returning JSON. get_current_user gains a cookie fallback
  (X-API-Key -> Bearer -> cookie). refresh/logout read the refresh cookie
  and set/clear cookies. New shared auth.js (authedFetch) sends cookies and
  silently refreshes on 401. Static pages drop the bogus user_id and call
  the correct /me endpoints.

Profile editing (read/edit/affirm):
- PATCH /discovery/profile/me edits the prose (Ikigai summaries, overlap
  narrative, goals); owner-scoped, partial update, 409 when locked. Edit
  mode in profile.html with Save/Cancel.

Also: bump default model to claude-sonnet-4-6, align ports to 8011
(OAuth redirect, CORS), add COOKIE_SECURE/POST_LOGIN_REDIRECT config, and
refresh the README to match the shipped behavior.

Tests: 33 passing (added cookie-auth, profile-edit, goal-extraction cases;
factored a shared app_client fixture into conftest.py).

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

app/routers/auth.py

@@ -1,14 +1,18 @@
 """OAuth + JWT auth routes (mounted at /api/auth and /api/me)."""
 import os
 from datetime import datetime, timedelta, timezone
+from typing import Optional
 
 from authlib.integrations.base_client import OAuthError
-from fastapi import APIRouter, Depends, HTTPException, Request, status
+from fastapi import APIRouter, Depends, HTTPException, Request, Response, status
+from fastapi.responses import RedirectResponse
 from pydantic import BaseModel
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.auth import (
+    REFRESH_COOKIE,
+    clear_auth_cookies,
     create_access_token,
     email_domain_allowed,
     find_or_create_google_user,
@@ -16,6 +20,7 @@ from app.auth import (
     hash_refresh_token,
     issue_refresh_token,
     oauth,
+    set_auth_cookies,
 )
 from app.database import get_db
 from app.models import (
@@ -50,15 +55,10 @@ class UserOut(BaseModel):
         )
 
 
-class TokenBundle(BaseModel):
-    access_token: str
-    refresh_token: str
-    token_type: str = "bearer"
-    user: UserOut
-
-
 class RefreshIn(BaseModel):
-    refresh_token: str
+    # Optional: browser clients send the refresh token via httpOnly cookie and
+    # omit the body entirely; API clients may still post it explicitly.
+    refresh_token: Optional[str] = None
 
 
 class AccessOut(BaseModel):
@@ -122,19 +122,32 @@ async def auth_callback(request: Request, db: AsyncSession = Depends(get_db)):
     refresh = await issue_refresh_token(
         db, user, request.headers.get("user-agent")
     )
-    return TokenBundle(
-        access_token=access,
-        refresh_token=refresh,
-        user=UserOut.from_orm_user(user),
-    )
+
+    # The browser drove this redirect flow, so hand the session back as
+    # httpOnly cookies and bounce into the app rather than dumping JSON.
+    redirect_to = os.getenv("POST_LOGIN_REDIRECT", "/static/discovery.html")
+    response = RedirectResponse(url=redirect_to, status_code=status.HTTP_303_SEE_OTHER)
+    set_auth_cookies(response, access, refresh)
+    return response
 
 
 @router.post("/auth/refresh", response_model=AccessOut)
 async def refresh_access_token(
-    body: RefreshIn, db: AsyncSession = Depends(get_db)
+    request: Request,
+    response: Response,
+    body: Optional[RefreshIn] = None,
+    db: AsyncSession = Depends(get_db),
 ):
+    raw_refresh = (body.refresh_token if body else None) or request.cookies.get(
+        REFRESH_COOKIE
+    )
+    if not raw_refresh:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="No refresh token provided",
+        )
     stmt = select(RefreshToken).where(
-        RefreshToken.token_hash == hash_refresh_token(body.refresh_token)
+        RefreshToken.token_hash == hash_refresh_token(raw_refresh)
     )
     row = (await db.execute(stmt)).scalar_one_or_none()
     now = datetime.now(timezone.utc)
@@ -150,6 +163,8 @@ async def refresh_access_token(
             detail="User no longer exists",
         )
     access = create_access_token(user.id, user.email)
+    # Refresh the access cookie in place; the refresh cookie is untouched.
+    set_auth_cookies(response, access)
     return AccessOut(access_token=access)
 
 
@@ -162,16 +177,25 @@ def _expired(expires_at: datetime, now: datetime) -> bool:
 
 @router.post("/auth/logout")
 async def logout(
-    body: RefreshIn, db: AsyncSession = Depends(get_db)
+    request: Request,
+    response: Response,
+    body: Optional[RefreshIn] = None,
+    db: AsyncSession = Depends(get_db),
 ):
-    """Revoke a single refresh token. Idempotent — unknown token returns 200."""
-    stmt = select(RefreshToken).where(
-        RefreshToken.token_hash == hash_refresh_token(body.refresh_token)
+    """Revoke a single refresh token and clear the session cookies. Idempotent
+    — an unknown/missing token still returns 200 with cookies cleared."""
+    raw_refresh = (body.refresh_token if body else None) or request.cookies.get(
+        REFRESH_COOKIE
     )
-    row = (await db.execute(stmt)).scalar_one_or_none()
-    if row is not None and row.revoked_at is None:
-        row.revoked_at = datetime.now(timezone.utc)
-        await db.commit()
+    if raw_refresh:
+        stmt = select(RefreshToken).where(
+            RefreshToken.token_hash == hash_refresh_token(raw_refresh)
+        )
+        row = (await db.execute(stmt)).scalar_one_or_none()
+        if row is not None and row.revoked_at is None:
+            row.revoked_at = datetime.now(timezone.utc)
+            await db.commit()
+    clear_auth_cookies(response)
     return {"status": "ok"}