refactor: Phase 8 — backend deletion (chat / voice / push / journal / curator)

Mega-commit. Strips all server-side LLM machinery now that Phase 7 has
removed the corresponding UI surfaces and the MCP HTTP endpoint is the
sole assistant interface.

Deleted (services/):
  chat, generation_buffer, generation_log, generation_task, llm, tools/
  (entire package), stt, tts, voice_config, voice_library, push,
  journal_closeout, journal_pipeline, journal_prep, journal_scheduler,
  journal_search, curator, curator_scheduler, consolidation,
  tag_suggestions, research, weather, article_fetcher, pending_actions,
  moments, assist, wikipedia.

Deleted (routes/):
  chat, voice, push, journal, quick_capture, fable_mcp_dist.

Deleted (models/):
  conversation, generation_tool_log, push_subscription,
  pending_curator_action, moment, weather_cache.

Deleted (tests/):
  test_generation_log, test_journal_*, test_consolidation, test_lookup_tool,
  test_notes_consolidation_trigger, test_record_moment_guards,
  test_research_pipeline, test_tools_*, test_tool_use_fixes,
  test_voice_library, test_weather_service, test_calendar_tool_tz,
  test_wikipedia.

Deleted (top-level):
  fable-mcp/ (legacy standalone stdio package — wheel-build pipeline
  also removed from Dockerfile).

app.py:
  - blueprint registrations for the 6 deleted routes
  - startup hook trimmed: no more Ollama warmup, KV-cache priming,
    journal/curator schedulers, voice model loading
  - shutdown hook simplified
  - httpx import dropped (was for Ollama calls)

pyproject.toml:
  - removed deps: pywebpush, feedparser, html2text, trafilatura
  - removed [voice] extras entirely
  - description updated for the MCP-first architecture

Dockerfile:
  - removed faster-whisper / piper-tts install steps
  - removed bundled piper voice download stage
  - removed fable-mcp wheel build stage

Surviving-file edits:
  - services/auth.py: drop Conversation table claim on first-user setup
  - services/backup.py: drop conversation / push-subscription export+restore;
    v1/v2 restore now silently skip pre-pivot conversation data
  - services/notes.py: drop maybe_consolidate trigger on task done/cancelled;
    drop _maybe_trigger_project_summary (LLM auto-summary)
  - services/projects.py: drop generate_project_summary + backfill_project_summaries
    (both LLM-driven)
  - services/user_profile.py: drop append_observations / consolidate /
    clear_learned_data (curator-tied) and build_profile_context
    (was LLM system-prompt builder)
  - services/notifications.py: stub out _fire_push_notif (was send_push_notification)
  - services/event_scheduler.py: drop event-reminder push + chat-retention
    cleanup job; keep CalDAV pull-sync + reminders job (in-app)
  - services/diagnostics.py: _curator_busy() always False
  - routes/notes.py: drop /assist, /assist/stream, /suggest-tags endpoints
  - routes/tasks.py: drop /<id>/consolidate endpoint
  - routes/settings.py: drop /models, KV-cache-prime-on-save, journal-schedule
    timezone hook, and the SearXNG search-test endpoint; inline _is_private_url
    (was in services/llm.py)
  - routes/admin.py: drop /voice, /voice/reload endpoints
  - routes/profile.py: drop /consolidate, /observations (GET, DELETE)
  - models/__init__.py: drop the 6 dead model imports

Frontend cascade:
  - stores/push.ts: deleted entirely (no callers after Phase 7)
  - stores/settings.ts: drop checkVoiceStatus + voice-status state
  - views/SettingsView.vue: drop Locations section + journalConfig state
    (was tied to /api/journal/config); drop JournalConfig + journal/voice
    api/client imports
  - frontend/api/client.ts: orphaned voice/journal/profile-observation/
    fable-mcp-dist exports are left as dead but harmless (call them and
    they 404; type-check is clean).

Pre-existing v1 backups that contained conversations/messages still
restore — those tables are silently dropped from the import path.
Anyone pulling the new image with a populated database will need the
Phase 9 migration to drop the dead tables (coming next).

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

src/fabledassistant/services/projects.py

@@ -71,7 +71,6 @@ async def list_projects(user_id: int, status: str | None = None) -> list[Project
 
 
 async def update_project(user_id: int, project_id: int, **fields: object) -> Project | None:
-    import asyncio
     async with async_session() as session:
         result = await session.execute(
             select(Project).where(Project.id == project_id, Project.user_id == user_id)
@@ -85,93 +84,9 @@ async def update_project(user_id: int, project_id: int, **fields: object) -> Pro
         project.updated_at = datetime.now(timezone.utc)
         await session.commit()
         await session.refresh(project)
-    asyncio.create_task(generate_project_summary(user_id, project_id))
     return project
 
 
-async def generate_project_summary(user_id: int, project_id: int) -> None:
-    """Generate an LLM summary for a project and persist it. Fire-and-forget safe."""
-    try:
-        async with async_session() as session:
-            project = (await session.execute(
-                select(Project).where(Project.id == project_id, Project.user_id == user_id)
-            )).scalars().first()
-            if project is None:
-                return
-
-            note_rows = (await session.execute(
-                select(Note.title, Note.body)
-                .where(Note.project_id == project_id, Note.user_id == user_id)
-                .order_by(Note.updated_at.desc())
-                .limit(10)
-            )).all()
-
-        title = project.title or ""
-        description = project.description or ""
-        goal = project.goal or ""
-        note_snippets = "\n".join(
-            f"- {r.title}: {(r.body or '')[:200]}" for r in note_rows
-        )
-
-        prompt = (
-            f"Summarize this project in 3-4 sentences covering its purpose, themes, and content.\n"
-            f"Title: {title}\nDescription: {description}\nGoal: {goal}\n"
-            f"Recent notes:\n{note_snippets}"
-        )
-
-        from fabledassistant.services.llm import generate_completion
-        from fabledassistant.config import Config
-        from fabledassistant.services.settings import get_setting
-        messages = [{"role": "user", "content": prompt}]
-        bg_model = await get_setting(user_id, "background_model", Config.OLLAMA_BACKGROUND_MODEL)
-        summary = await generate_completion(messages, model=bg_model, max_tokens=400, num_ctx=2048)
-        if not summary:
-            return
-
-        async with async_session() as session:
-            project = (await session.execute(
-                select(Project).where(Project.id == project_id)
-            )).scalars().first()
-            if project:
-                project.auto_summary = summary.strip()
-                project.summary_updated_at = datetime.now(timezone.utc)
-                await session.commit()
-        logger.debug("Generated summary for project %d", project_id)
-    except Exception:
-        logger.debug("Failed to generate summary for project %d", project_id, exc_info=True)
-
-
-# Cutoff: summaries older than this were generated by qwen2.5:3b, which
-# produced broken output (token repetition, hallucinated topics, misspellings).
-# Anything stamped before the switch to gemma3:4b on 2026-04-12 gets
-# regenerated at startup so the whole project list ends up on the better model.
-_BACKGROUND_MODEL_CUTOVER = datetime(2026, 4, 12, tzinfo=timezone.utc)
-
-
-async def backfill_project_summaries() -> None:
-    """Generate summaries for projects missing or predating the gemma3:4b cutover.
-
-    Fire-and-forget: each summary runs as its own background task.
-    """
-    import asyncio
-    from sqlalchemy import or_
-    try:
-        async with async_session() as session:
-            rows = (await session.execute(
-                select(Project.id, Project.user_id).where(
-                    or_(
-                        Project.auto_summary.is_(None),
-                        Project.summary_updated_at.is_(None),
-                        Project.summary_updated_at < _BACKGROUND_MODEL_CUTOVER,
-                    )
-                )
-            )).all()
-        for row in rows:
-            asyncio.create_task(generate_project_summary(row.user_id, row.id))
-    except Exception:
-        logger.debug("backfill_project_summaries failed", exc_info=True)
-
-
 async def delete_project(user_id: int, project_id: int) -> bool:
     async with async_session() as session:
         result = await session.execute(