Adds project-level sharing via the new project_shares table plus the
infrastructure that makes multi-user editing safe and visible.
Authorization (lib/access.ts):
- getAccessibleProjects / getProjectAccess centralise the predicate
used by every read and write path.
- readableProjectIds / writableProjectIds drive listing-style queries.
- Web UI Server Actions and pages source group memberships from the
user_groups table so authorization works without depending on
Agent A's session callback shape.
Optimistic locking:
- memories + snippets gain version + last_edited_by columns. Every
UPDATE bumps version and stamps the editor; UPDATE WHERE clauses
require the caller's pre-fetched version, surfacing a clear
"refresh and try again" error on lost-write races rather than
silently clobbering.
- MemoryUpdateInput / SnippetPutInput accept an optional version
token.
MCP tools:
- memory.write / .update / .delete / .get / .list / .search,
snippet.put / .get / .list / .delete now respect shared-project
access (read = owner | any share, write = owner | rw share).
- project, defaults to ctx.defaultProjectKey from the X-Project-Key
header (populated by the MCP route — Agent A's wiring).
- project.identify returns shared projects you have access to and
prefers an owned project on key collision, audit-logging the
collision so an operator can debug it.
- Tool descriptions for memory.update, memory.write, snippet.put,
and project.identify updated with the co-edit / shared-project
notes.
Web UI:
- Project detail page: ownership badge, shared-with-N-groups badge,
owner-only "Manage sharing" section (add/flip/remove shares via
lib/share-actions.ts). Add-share is constrained to groups the
granter is already in.
- "Shared" chips on memory cards in /memories and /dashboard.
- "Last edited by ..." on memory + snippet detail pages, shown only
when the last editor isn't the row's original author so the chip
stays informative.
- Read-only viewers (ro shares) lose Edit/Delete affordances on
memories and snippets.
Migration 0004_project_shares.sql adds project_shares + the two new
columns on memories and snippets; it depends on Agent A's
0003_groups.sql for the groups, user_groups, and memory_access enum.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Snippets are exact-name-keyed templates (PR formats, checklists, style
rules) — prescriptive artifacts the user wants applied consistently.
Distinct from memories, which are searched descriptive prose.
- Migration 0002 adds scope/project_id/deleted_at to snippets, partial
unique indexes per scope, and a scope/project CHECK constraint
mirroring memories_scope_project_chk.
- New @shared-memory/schemas: SnippetName/Put/Get/List/Delete inputs
with shared scope-project refinement.
- lib/snippets.ts: get/put/list/softDelete helpers used by both the
Web Server Actions and the MCP tool handlers.
- Four new MCP tools (snippet.put/get/list/delete) with directive
descriptions contrasting against memory.* (exact-name lookup vs
search; templates vs facts).
- /snippets pages: list, new, [name] with edit + delete and a
scope-picker when a name lives in multiple scopes.
- Nav: Snippets link between Memories and Projects.
Design note: when a name exists in both user and project scope,
snippet.get without an explicit scope prefers project (if project key
given) then falls back to user. The detail page shows a picker when
the name is ambiguous and no scope query param was supplied.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
shadowdaoandClaude Opus 4.7