feat(notes): isSpaceContext flag replaces kontext module (Option B)

Retire the kontext module entirely; the per-Space standing-context
document is now a regular Note flagged with `isSpaceContext: true`.
Daily use ("URL → Notiz") moves to the notes module as a first-class
action; the same primitive is reused by the (planned) Brand/Firma-Space
onboarding wizard to seed a Space-context Note from a URL.

Why: kontext was inconsistent — its UI was a URL-crawler that wrote
to userContext.freeform (profile module), while its kontextDoc table
+ AI-Mission-Runner auto-injection was a write-only shell with no
real editor. One concept (Notes) now carries both ad-hoc noting and
Space-context, with mutex (max 1 flagged Note per Space).

Notes module:
- types: add `isSpaceContext?: boolean` to LocalNote + Note
- queries: add `useSpaceContextNote()` (the active Space's flagged note)
- store: `markAsSpaceContext(id | null)` with mutex sweep across Space
- ListView: "Aus URL importieren" inline form (URL + crawl-mode +
  KI-Zusammenfassung toggle); "Als Space-Kontext markieren" /
  "Space-Kontext lösen" context-menu item; ★-Badge on flagged notes
- new api.ts: `crawlUrl()` client for POST /api/v1/notes/import-url

Notes API (apps/api):
- new modules/notes/routes.ts with /import-url (ported from kontext;
  same crawler + LLM summary pipeline, NOTES_IMPORT_URL credit op)
- mount at /api/v1/notes; add 'notes' to RESOURCE_MODULES (beta+ tier)
- delete modules/context (UI-less /ai/generate + /ai/estimate had no
  consumers; /import-url moved to notes)
- packages/credits: rename AI_CONTEXT_GENERATION → NOTES_IMPORT_URL

AI Mission Runner:
- default-resolvers: drop kontextResolver + kontextIndexer; the
  notesIndexer flags `isSpaceContext` notes with "★ " prefix and
  bubbles them to the top of the picker
- writing reference-resolver: `kind: 'kontext'` now reads the flagged
  Note via scope-scan instead of the kontextDoc table; tests updated
- writing ReferencePicker: useSpaceContextNote replaces useKontextDoc
- AiDebugBlock + MissionGrantDialog + ai-missions ListView: drop
  'kontextDoc' from ENCRYPTED_SERVER_TABLES set
- ai-agents ListView: drop 'kontext' from POLICY_MODULES

Profile module:
- ContextFreeform.svelte: switch import from kontext/api to notes/api
  (the URL-crawl is the same primitive; it still writes to
  userContext.freeform — only the import path changed)

Dexie:
- v58: notes index gains `isSpaceContext`; kontextDoc table dropped

Kontext module deletion:
- delete apps/mana/apps/web/src/lib/modules/kontext/ entirely
- delete (app)/kontext/ route
- drop registerApp + Scroll icon from app-registry/apps.ts
- drop kontext entry from help-content
- drop kontextModuleConfig from data/module-registry.ts
- drop kontextDoc from crypto registry

mana-auth:
- bootstrap-singletons: drop bootstrapSpaceSingletons function entirely
  (kontextDoc was the only per-Space singleton); userContext bootstrap
  unchanged
- better-auth.config: drop kontextDoc bootstrap call from personal-space
  hook + organizationHooks.afterCreateOrganization
- me-bootstrap: drop per-space bootstrap loop; response shape kept
  (always-empty `spaces: {}`) for backwards-compat with older clients

Note: the still-existing legacy `context` module (CMS-style docs/spaces,
unrelated to kontext) is left in place; its cleanup landed on the
articles-bulk-import branch and is out of scope for this PR.

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

packages/shared-utils/src/analytics.ts

@@ -153,7 +153,6 @@ const track = {
 	contacts: createModuleTracker('contacts'),
 	cards: createModuleTracker('cards'),
 	mana: createModuleTracker('mana'),
-	context: createModuleTracker('context'),
 	skilltree: createModuleTracker('skilltree'),
 	food: createModuleTracker('food'),
 	plants: createModuleTracker('plants'),
@@ -352,18 +351,6 @@ export const ManaEvents = {
 		track.mana('feature_blocked_by_auth', params),
 };
 
-/**
- * Context App Events
- */
-export const ContextEvents = {
-	documentCreated: (type: string) => track.context('document_created', { type }),
-	documentDeleted: () => track.context('document_deleted'),
-	documentPinned: (pinned: boolean) => track.context('document_pinned', { pinned }),
-	spaceCreated: () => track.context('space_created'),
-	spaceDeleted: () => track.context('space_deleted'),
-	aiGenerated: () => track.context('ai_generated'),
-};
-
 /**
  * SkillTree App Events
  */