Add a retargetable, human-readable vanity link namespace /l/<alias> that
sits alongside the untouched /share/... routes.
- New share_aliases table (workspace-scoped, UNIQUE(workspace_id, alias),
page_id nullable ON DELETE SET NULL so the address outlives its target).
- ShareAliasRepo + ShareAliasService (create / no-op / 409 reassign guard /
availability / request-time readable-target resolution through the single
existing share boundary).
- Public ShareAliasRedirectController (GET /l/:alias) issues a 302 (never 301,
the target is mutable) to the canonical /share/:key/p/:slug page; unknown /
dangling / no-longer-readable aliases serve the SPA index with no leak.
'l/:alias' excluded from the global /api prefix.
- Authenticated ShareAliasController (set/remove/availability/for-page).
- Shared ASCII-only normalize/validate util (server + client copies).
- Client: Custom address block in the share modal (live normalize + debounced
availability + copy + reassign confirmation dialog).
- Unit tests: util, repo SQL-shape, service semantics, migration/entity sanity
(server jest) + client alias util (vitest).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Lets an unauthenticated viewer of a published share ask an AI scoped strictly
to that share's page tree. The authenticated agent is untouched; the security
boundary is the tool scope (no identity), and nothing is persisted.
Server:
- workspace toggle settings.ai.publicShareAssistant (default off) +
optional settings.ai.provider.publicShareChatModel (cheap model id; reuses
the chat driver/baseUrl/key). getChatModel(workspaceId, override) substitutes
only the model id, falling back to chatModel.
- POST /api/shares/ai/stream (@Public, SSE). Guardrail funnel, each failing
before streaming: toggle off -> 404; share missing/wrong-workspace/sharing
off -> 404; pageId not in share tree -> 404; provider unconfigured -> 503;
per-IP (5/min) and per-workspace (300/h, IP-independent) rate limits -> 429.
Uniform 404s never confirm a private page's existence.
- forShare read-only in-process toolset: searchSharePages (existing shareId
FTS branch, no spaceId/userId), getSharePage (getShareForPage gate +
share.id check, content via the public sanitizer), listSharePages. No write/
comment/history/cross-space/external-MCP tools.
- Locked share system prompt + immutable safety block; stepCountIs(5).
- /shares/page-info exposes an aiAssistant flag (gated behind isSharingAllowed).
Client: an ephemeral, text-only Ask-AI widget on the public shared page,
shown only when the flag is set; useChat -> /api/shares/ai/stream,
credentials omit. Admin toggle + model field in Settings -> AI.
Also adds a jest moduleNameMapper for src/-rooted imports (fixes pre-existing
unresolvable specs; additive).
Implements docs/public-share-assistant-plan.md.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
