app/api/endpoints/community.py

@@ -0,0 +1,339 @@
+# app/api/endpoints/community.py
+# MIT License
+
+from __future__ import annotations
+
+import asyncio
+import logging
+import re
+from datetime import datetime, timezone
+
+from fastapi import APIRouter, Depends, HTTPException, Request, Response
+
+from app.cloud_session import CloudUser, get_session
+from app.core.config import settings
+from app.db.store import Store
+from app.services.community.feed import posts_to_rss
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(prefix="/community", tags=["community"])
+
+# Module-level KiwiCommunityStore — None when COMMUNITY_DB_URL is not set.
+# Browse endpoints degrade gracefully to empty; write endpoints return 503.
+_community_store = None
+
+
+def _get_community_store():
+    """Return the module-level KiwiCommunityStore, or None if community DB is unavailable."""
+    return _community_store
+
+
+def init_community_store(community_db_url: str | None) -> None:
+    """Called from main.py lifespan when COMMUNITY_DB_URL is set."""
+    global _community_store
+    if not community_db_url:
+        logger.info(
+            "COMMUNITY_DB_URL not set — community write features disabled. "
+            "Browse still works via cloud fallback."
+        )
+        return
+    try:
+        from circuitforge_core.community import CommunityDB
+        from app.services.community.community_store import KiwiCommunityStore
+        db = CommunityDB(dsn=community_db_url)
+        db.run_migrations()
+        _community_store = KiwiCommunityStore(db)
+        logger.info("Community store initialized (PostgreSQL).")
+    except Exception as exc:
+        logger.warning("Community store init failed — community writes disabled: %s", exc)
+
+
+# ── Browse (no auth required — Free tier) ────────────────────────────────────
+
+@router.get("/posts")
+async def list_posts(
+    post_type: str | None = None,
+    dietary_tags: str | None = None,
+    allergen_exclude: str | None = None,
+    page: int = 1,
+    page_size: int = 20,
+):
+    """Paginated community post list. Available on all tiers (read-only)."""
+    store = _get_community_store()
+    if store is None:
+        return {"posts": [], "total": 0, "note": "Community DB not available on this instance."}
+
+    dietary = [t.strip() for t in dietary_tags.split(",")] if dietary_tags else None
+    allergen_ex = [t.strip() for t in allergen_exclude.split(",")] if allergen_exclude else None
+    offset = (page - 1) * min(page_size, 100)
+
+    posts = await asyncio.to_thread(
+        store.list_posts,
+        limit=min(page_size, 100),
+        offset=offset,
+        post_type=post_type,
+        dietary_tags=dietary,
+        allergen_exclude=allergen_ex,
+    )
+    return {"posts": [_post_to_dict(p) for p in posts], "page": page, "page_size": page_size}
+
+
+@router.get("/posts/{slug}")
+async def get_post(slug: str, request: Request):
+    """Single post. Returns AP JSON-LD when Accept: application/activity+json."""
+    store = _get_community_store()
+    if store is None:
+        raise HTTPException(status_code=503, detail="Community DB not available on this instance.")
+
+    post = await asyncio.to_thread(store.get_post_by_slug, slug)
+    if post is None:
+        raise HTTPException(status_code=404, detail="Post not found.")
+
+    accept = request.headers.get("accept", "")
+    if "application/activity+json" in accept:
+        from app.services.community.ap_compat import post_to_ap_json_ld
+        base_url = str(request.base_url).rstrip("/")
+        return post_to_ap_json_ld(_post_to_dict(post), base_url=base_url)
+
+    return _post_to_dict(post)
+
+
+@router.get("/feed.rss")
+async def get_rss_feed(request: Request):
+    """RSS 2.0 feed of recent community posts."""
+    store = _get_community_store()
+    posts_data: list[dict] = []
+    if store is not None:
+        posts = await asyncio.to_thread(store.list_posts, limit=50)
+        posts_data = [_post_to_dict(p) for p in posts]
+
+    base_url = str(request.base_url).rstrip("/")
+    rss = posts_to_rss(posts_data, base_url=base_url)
+    return Response(content=rss, media_type="application/rss+xml; charset=utf-8")
+
+
+@router.get("/local-feed")
+async def local_feed():
+    """LAN peer endpoint: last 50 posts from this instance. No auth required."""
+    store = _get_community_store()
+    if store is None:
+        return []
+    posts = await asyncio.to_thread(store.list_posts, limit=50)
+    return [_post_to_dict(p) for p in posts]
+
+
+# ── Write endpoints (auth required) ──────────────────────────────────────────
+
+@router.post("/posts", status_code=201)
+async def publish_post(
+    body: dict,
+    session: CloudUser = Depends(get_session),
+):
+    """Publish a plan or outcome to the community feed. Requires Paid tier."""
+    from app.tiers import can_use
+    if not can_use("community_publish", session.tier, session.has_byok):
+        raise HTTPException(status_code=402, detail="Community publishing requires Paid tier.")
+
+    store = _get_community_store()
+    if store is None:
+        raise HTTPException(
+            status_code=503,
+            detail="This Kiwi instance is not connected to a community database. "
+                   "Publishing is only available on cloud instances.",
+        )
+
+    # Resolve pseudonym (first-time setup inline via publish modal)
+    from app.services.community.community_store import get_or_create_pseudonym
+    db_path = session.db
+
+    def _get_pseudonym():
+        s = Store(db_path)
+        try:
+            return get_or_create_pseudonym(
+                store=s,
+                directus_user_id=session.user_id,
+                requested_name=body.get("pseudonym_name"),
+            )
+        finally:
+            s.close()
+
+    pseudonym = await asyncio.to_thread(_get_pseudonym)
+
+    # Compute element snapshot from corpus recipes in the plan
+    recipe_ids = [slot["recipe_id"] for slot in body.get("slots", []) if slot.get("recipe_id")]
+    from app.services.community.element_snapshot import compute_snapshot
+
+    def _snapshot():
+        s = Store(db_path)
+        try:
+            return compute_snapshot(recipe_ids=recipe_ids, store=s)
+        finally:
+            s.close()
+
+    snapshot = await asyncio.to_thread(_snapshot)
+
+    # Build deterministic slug
+    slug_title = re.sub(r"[^a-z0-9]+", "-", (body.get("title") or "plan").lower()).strip("-")
+    today = datetime.now(timezone.utc).strftime("%Y-%m-%d")
+    post_type = body.get("post_type", "plan")
+    slug = f"kiwi-{_post_type_prefix(post_type)}-{pseudonym.lower().replace(' ', '')}-{today}-{slug_title}"[:120]
+
+    try:
+        from circuitforge_core.community.models import CommunityPost
+        post = CommunityPost(
+            slug=slug,
+            pseudonym=pseudonym,
+            post_type=post_type,
+            published=datetime.now(timezone.utc),
+            title=body.get("title", "Untitled"),
+            description=body.get("description"),
+            photo_url=body.get("photo_url"),
+            slots=body.get("slots", []),
+            recipe_id=body.get("recipe_id"),
+            recipe_name=body.get("recipe_name"),
+            level=body.get("level"),
+            outcome_notes=body.get("outcome_notes"),
+            seasoning_score=snapshot.seasoning_score,
+            richness_score=snapshot.richness_score,
+            brightness_score=snapshot.brightness_score,
+            depth_score=snapshot.depth_score,
+            aroma_score=snapshot.aroma_score,
+            structure_score=snapshot.structure_score,
+            texture_profile=snapshot.texture_profile,
+            dietary_tags=list(snapshot.dietary_tags),
+            allergen_flags=list(snapshot.allergen_flags),
+            flavor_molecules=list(snapshot.flavor_molecules),
+            fat_pct=snapshot.fat_pct,
+            protein_pct=snapshot.protein_pct,
+            moisture_pct=snapshot.moisture_pct,
+        )
+    except ImportError:
+        raise HTTPException(status_code=503, detail="Community module not available.")
+
+    inserted = await asyncio.to_thread(store.insert_post, post)
+    return _post_to_dict(inserted)
+
+
+@router.delete("/posts/{slug}", status_code=204)
+async def delete_post(slug: str, session: CloudUser = Depends(get_session)):
+    """Hard-delete a post. Only succeeds if the caller is the post author (pseudonym match)."""
+    store = _get_community_store()
+    if store is None:
+        raise HTTPException(status_code=503, detail="Community DB not available.")
+
+    def _get_pseudonym():
+        s = Store(session.db)
+        try:
+            return s.get_current_pseudonym(session.user_id)
+        finally:
+            s.close()
+
+    pseudonym = await asyncio.to_thread(_get_pseudonym)
+    if not pseudonym:
+        raise HTTPException(status_code=400, detail="No pseudonym set. Cannot delete posts.")
+
+    deleted = await asyncio.to_thread(store.delete_post, slug=slug, pseudonym=pseudonym)
+    if not deleted:
+        raise HTTPException(status_code=404, detail="Post not found or you are not the author.")
+
+
+@router.post("/posts/{slug}/fork", status_code=201)
+async def fork_post(slug: str, session: CloudUser = Depends(get_session)):
+    """Exact-copy fork: creates a new meal plan in the caller's DB with matching slots. Free."""
+    store = _get_community_store()
+    if store is None:
+        raise HTTPException(status_code=503, detail="Community DB not available.")
+
+    post = await asyncio.to_thread(store.get_post_by_slug, slug)
+    if post is None:
+        raise HTTPException(status_code=404, detail="Post not found.")
+    if post.post_type != "plan":
+        raise HTTPException(status_code=400, detail="Only plan posts can be forked as a meal plan.")
+
+    from datetime import date
+
+    def _create_plan():
+        s = Store(session.db)
+        try:
+            week_start = date.today().strftime("%Y-%m-%d")
+            meal_types = list({slot["meal_type"] for slot in post.slots}) or ["dinner"]
+            plan = s.create_meal_plan(week_start=week_start, meal_types=meal_types)
+            for slot in post.slots:
+                s.assign_recipe_to_slot(
+                    plan_id=plan["id"],
+                    day_of_week=slot["day"],
+                    meal_type=slot["meal_type"],
+                    recipe_id=slot["recipe_id"],
+                )
+            return plan
+        finally:
+            s.close()
+
+    plan = await asyncio.to_thread(_create_plan)
+    return {"plan_id": plan["id"], "week_start": plan["week_start"], "forked_from": slug}
+
+
+@router.post("/posts/{slug}/fork-adapt", status_code=201)
+async def fork_adapt_post(slug: str, session: CloudUser = Depends(get_session)):
+    """Fork with LLM pantry adaptation. Paid/BYOK. Returns suggestions for user review."""
+    from app.tiers import can_use
+    if not can_use("community_fork_adapt", session.tier, session.has_byok):
+        raise HTTPException(status_code=402, detail="Fork with adaptation requires Paid tier or BYOK.")
+
+    store = _get_community_store()
+    if store is None:
+        raise HTTPException(status_code=503, detail="Community DB not available.")
+
+    post = await asyncio.to_thread(store.get_post_by_slug, slug)
+    if post is None:
+        raise HTTPException(status_code=404, detail="Post not found.")
+
+    # BSL 1.1 call site — LLM adaptation
+    from app.services.meal_plan.llm_planner import adapt_plan_to_pantry
+    suggestions = await adapt_plan_to_pantry(
+        slots=list(post.slots),
+        db_path=session.db,
+        tier=session.tier,
+        has_byok=session.has_byok,
+    )
+    return {"suggestions": suggestions, "forked_from": slug}
+
+
+# ── Helpers ───────────────────────────────────────────────────────────────────
+
+def _post_to_dict(post) -> dict:
+    """Convert a CommunityPost (frozen dataclass) to a JSON-serializable dict."""
+    return {
+        "slug": post.slug,
+        "pseudonym": post.pseudonym,
+        "post_type": post.post_type,
+        "published": post.published.isoformat() if hasattr(post.published, "isoformat") else str(post.published),
+        "title": post.title,
+        "description": post.description,
+        "photo_url": post.photo_url,
+        "slots": list(post.slots),
+        "recipe_id": post.recipe_id,
+        "recipe_name": post.recipe_name,
+        "level": post.level,
+        "outcome_notes": post.outcome_notes,
+        "element_profiles": {
+            "seasoning_score": post.seasoning_score,
+            "richness_score": post.richness_score,
+            "brightness_score": post.brightness_score,
+            "depth_score": post.depth_score,
+            "aroma_score": post.aroma_score,
+            "structure_score": post.structure_score,
+            "texture_profile": post.texture_profile,
+        },
+        "dietary_tags": list(post.dietary_tags),
+        "allergen_flags": list(post.allergen_flags),
+        "flavor_molecules": list(post.flavor_molecules),
+        "fat_pct": post.fat_pct,
+        "protein_pct": post.protein_pct,
+        "moisture_pct": post.moisture_pct,
+    }
+
+
+def _post_type_prefix(post_type: str) -> str:
+    return {"plan": "plan", "recipe_success": "success", "recipe_blooper": "blooper"}.get(post_type, "post")

app/api/routes.py

@@ -1,5 +1,6 @@
 from fastapi import APIRouter
 from app.api.endpoints import health, receipts, export, inventory, ocr, recipes, settings, staples, feedback, household, saved_recipes, meal_plans
+from app.api.endpoints.community import router as community_router
 
 api_router = APIRouter()
 
@@ -15,3 +16,4 @@ api_router.include_router(feedback.router,      prefix="/feedback",     tags=["f
 api_router.include_router(household.router,     prefix="/household",    tags=["household"])
 api_router.include_router(saved_recipes.router, prefix="/recipes/saved", tags=["saved-recipes"])
 api_router.include_router(meal_plans.router,    prefix="/meal-plans",   tags=["meal-plans"])
+api_router.include_router(community_router)

app/db/store.py

@@ -1128,3 +1128,31 @@ class Store:
         )
         self.conn.commit()
         return self._fetch_one("SELECT * FROM prep_tasks WHERE id = ?", (task_id,))
+
+    # ── Community pseudonyms ──────────────────────────────────────────────────
+
+    def get_current_pseudonym(self, directus_user_id: str) -> str | None:
+        """Return the current community pseudonym for this user, or None if not set."""
+        cur = self.conn.execute(
+            "SELECT pseudonym FROM community_pseudonyms "
+            "WHERE directus_user_id = ? AND is_current = 1 LIMIT 1",
+            (directus_user_id,),
+        )
+        row = cur.fetchone()
+        return row["pseudonym"] if row else None
+
+    def set_pseudonym(self, directus_user_id: str, pseudonym: str) -> None:
+        """Set the current community pseudonym for this user.
+
+        Marks any previous pseudonym as non-current (retains history for attribution).
+        """
+        self.conn.execute(
+            "UPDATE community_pseudonyms SET is_current = 0 WHERE directus_user_id = ?",
+            (directus_user_id,),
+        )
+        self.conn.execute(
+            "INSERT INTO community_pseudonyms (pseudonym, directus_user_id, is_current) "
+            "VALUES (?, ?, 1)",
+            (pseudonym, directus_user_id),
+        )
+        self.conn.commit()

app/main.py

@@ -20,6 +20,10 @@ async def lifespan(app: FastAPI):
     settings.ensure_dirs()
     register_kiwi_programs()
 
+    # Initialize community store (fail-soft if COMMUNITY_DB_URL not set)
+    from app.api.endpoints.community import init_community_store
+    init_community_store(settings.COMMUNITY_DB_URL)
+
     # Start LLM background task scheduler
     from app.tasks.scheduler import get_scheduler
     get_scheduler(settings.DB_PATH)

app/services/community/community_store.py

@@ -0,0 +1,108 @@
+# app/services/community/community_store.py
+# MIT License
+
+from __future__ import annotations
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+def get_or_create_pseudonym(
+    store,
+    directus_user_id: str,
+    requested_name: str | None,
+) -> str:
+    """Return the user's current pseudonym, creating it if it doesn't exist.
+
+    If the user has an existing pseudonym, return it (ignore requested_name).
+    If not, create using requested_name (must be provided for first-time setup).
+
+    Raises ValueError if no existing pseudonym and requested_name is None or blank.
+    """
+    existing = store.get_current_pseudonym(directus_user_id)
+    if existing:
+        return existing
+
+    if not requested_name or not requested_name.strip():
+        raise ValueError(
+            "A pseudonym is required for first publish. "
+            "Pass requested_name with your chosen display name."
+        )
+
+    name = requested_name.strip()
+    if "@" in name:
+        raise ValueError(
+            "Pseudonym must not contain '@' — use a display name, not an email address."
+        )
+
+    store.set_pseudonym(directus_user_id, name)
+    return name
+
+
+try:
+    from circuitforge_core.community import SharedStore, CommunityPost
+
+    class KiwiCommunityStore(SharedStore):
+        """Kiwi-specific community store: adds kiwi-domain query methods on top of SharedStore."""
+
+        def list_meal_plans(
+            self,
+            limit: int = 20,
+            offset: int = 0,
+            dietary_tags: list[str] | None = None,
+            allergen_exclude: list[str] | None = None,
+        ) -> list[CommunityPost]:
+            return self.list_posts(
+                limit=limit,
+                offset=offset,
+                post_type="plan",
+                dietary_tags=dietary_tags,
+                allergen_exclude=allergen_exclude,
+                source_product="kiwi",
+            )
+
+        def list_outcomes(
+            self,
+            limit: int = 20,
+            offset: int = 0,
+            post_type: str | None = None,
+        ) -> list[CommunityPost]:
+            if post_type in ("recipe_success", "recipe_blooper"):
+                return self.list_posts(
+                    limit=limit, offset=offset,
+                    post_type=post_type, source_product="kiwi",
+                )
+            # Fetch both types and merge by published date
+            success = self.list_posts(
+                limit=limit, offset=0, post_type="recipe_success", source_product="kiwi",
+            )
+            bloopers = self.list_posts(
+                limit=limit, offset=0, post_type="recipe_blooper", source_product="kiwi",
+            )
+            merged = sorted(success + bloopers, key=lambda p: p.published, reverse=True)
+            return merged[:limit]
+
+except ImportError:
+    # cf-core community module not yet merged — stub for local dev without community DB
+    class KiwiCommunityStore:  # type: ignore[no-redef]
+        def __init__(self, *args, **kwargs):
+            pass
+
+        def list_meal_plans(self, **kwargs):
+            return []
+
+        def list_outcomes(self, **kwargs):
+            return []
+
+        def list_posts(self, **kwargs):
+            return []
+
+        def get_post_by_slug(self, slug):
+            return None
+
+        def insert_post(self, post):
+            return post
+
+        def delete_post(self, slug, pseudonym):
+            return False

tests/api/test_community_endpoints.py

@@ -0,0 +1,68 @@
+# tests/api/test_community_endpoints.py
+import pytest
+from unittest.mock import patch, MagicMock
+from fastapi.testclient import TestClient
+from app.main import app
+
+client = TestClient(app)
+
+
+def test_get_community_posts_no_db_returns_empty():
+    """When COMMUNITY_DB_URL is not set, GET /community/posts returns empty list (no 500)."""
+    with patch("app.api.endpoints.community._community_store", None):
+        response = client.get("/api/v1/community/posts")
+    assert response.status_code == 200
+    data = response.json()
+    assert "posts" in data
+    assert isinstance(data["posts"], list)
+
+
+def test_get_community_post_not_found():
+    """GET /community/posts/{slug} returns 404 when slug doesn't exist."""
+    mock_store = MagicMock()
+    mock_store.get_post_by_slug.return_value = None
+    with patch("app.api.endpoints.community._community_store", mock_store):
+        response = client.get("/api/v1/community/posts/nonexistent-slug")
+    assert response.status_code == 404
+
+
+def test_get_community_rss():
+    """GET /community/feed.rss returns XML content-type."""
+    with patch("app.api.endpoints.community._community_store", None):
+        response = client.get("/api/v1/community/feed.rss")
+    assert response.status_code == 200
+    assert "xml" in response.headers.get("content-type", "")
+
+
+def test_post_community_no_store_returns_503():
+    """POST /community/posts returns 503 when community DB is not configured.
+
+    In local/dev mode the session auth is bypassed (local session). The endpoint
+    should then fail-soft with 503, not 500. Production cloud mode enforces auth
+    before the store check — tested in integration tests.
+    """
+    with patch("app.api.endpoints.community._community_store", None):
+        response = client.post("/api/v1/community/posts", json={"title": "Test"})
+    # 503 = no community store; 402 = tier gate fired first; both are acceptable
+    assert response.status_code in (402, 503)
+
+
+def test_delete_post_no_store_returns_503():
+    """DELETE /community/posts/{slug} returns 503 when community DB is not configured."""
+    with patch("app.api.endpoints.community._community_store", None):
+        response = client.delete("/api/v1/community/posts/some-slug")
+    assert response.status_code in (400, 503)
+
+
+def test_fork_post_route_exists():
+    """POST /community/posts/{slug}/fork route must exist (not 404)."""
+    response = client.post("/api/v1/community/posts/some-slug/fork")
+    assert response.status_code != 404
+
+
+def test_local_feed_returns_json():
+    """GET /community/local-feed returns JSON list for LAN peers."""
+    with patch("app.api.endpoints.community._community_store", None):
+        response = client.get("/api/v1/community/local-feed")
+    assert response.status_code == 200
+    assert isinstance(response.json(), list)

tests/services/community/test_community_store.py

@@ -0,0 +1,64 @@
+# tests/services/community/test_community_store.py
+import pytest
+from unittest.mock import MagicMock, patch
+from app.services.community.community_store import KiwiCommunityStore, get_or_create_pseudonym
+
+
+def test_get_or_create_pseudonym_new_user():
+    """First-time publish: creates a new pseudonym in per-user SQLite."""
+    mock_store = MagicMock()
+    mock_store.get_current_pseudonym.return_value = None
+    result = get_or_create_pseudonym(
+        store=mock_store,
+        directus_user_id="user-123",
+        requested_name="PastaWitch",
+    )
+    mock_store.set_pseudonym.assert_called_once_with("user-123", "PastaWitch")
+    assert result == "PastaWitch"
+
+
+def test_get_or_create_pseudonym_existing():
+    """If user already has a pseudonym, return it without creating a new one."""
+    mock_store = MagicMock()
+    mock_store.get_current_pseudonym.return_value = "PastaWitch"
+    result = get_or_create_pseudonym(
+        store=mock_store,
+        directus_user_id="user-123",
+        requested_name=None,
+    )
+    mock_store.set_pseudonym.assert_not_called()
+    assert result == "PastaWitch"
+
+
+def test_get_or_create_pseudonym_email_rejected():
+    """Pseudonyms with @ are rejected to prevent PII leakage."""
+    mock_store = MagicMock()
+    mock_store.get_current_pseudonym.return_value = None
+    with pytest.raises(ValueError, match="@"):
+        get_or_create_pseudonym(
+            store=mock_store,
+            directus_user_id="user-123",
+            requested_name="user@example.com",
+        )
+
+
+def test_get_or_create_pseudonym_blank_name_raises():
+    """Empty requested_name raises when no existing pseudonym."""
+    mock_store = MagicMock()
+    mock_store.get_current_pseudonym.return_value = None
+    with pytest.raises(ValueError):
+        get_or_create_pseudonym(
+            store=mock_store,
+            directus_user_id="user-123",
+            requested_name="",
+        )
+
+
+def test_kiwi_community_store_list_meal_plans_filters_by_plan_type():
+    """KiwiCommunityStore.list_meal_plans calls list_posts with post_type='plan'."""
+    store = KiwiCommunityStore.__new__(KiwiCommunityStore)
+    with patch.object(store, "list_posts", return_value=[]) as mock_list:
+        result = store.list_meal_plans(limit=10)
+        mock_list.assert_called_once()
+        call_kwargs = mock_list.call_args.kwargs
+        assert call_kwargs.get("post_type") == "plan"