feat(api): scope endpoints and live-link groundwork for Files, Links, Storage

apps/api/migrations/20261004120000_feeds_source.sql

@@ -0,0 +1,8 @@
+-- Who created a live feed row: 'comment' (GitHub comment sync) or 'user'
+-- (web, CLI, MCP, plugin). NULL on rows created before this column. Set on
+-- insert only: a reused scope keeps its first source. The per-workspace cap
+-- (apps/api/src/feeds.ts) counts live repo-scoped rows of any source (50) and
+-- applies only to user creates; PR and issue feeds are uncapped, so comment
+-- sync never falls back to /f/ links.
+ALTER TABLE feeds ADD COLUMN source TEXT
+  CHECK (source IS NULL OR source IN ('comment', 'user'));

apps/api/migrations/20261004120100_pr_activity_title_state.sql

@@ -0,0 +1,9 @@
+-- PR title and state on the rollup row, for the Files "By pull request"
+-- list and its state filter. Written by the pull_request webhook (rows whose
+-- repo is linked to the row's workspace only) and backfilled by
+-- GET /v1/workspaces/:ws/pulls from resolveTitles. NULL until either runs.
+-- The cursor index serves ORDER BY last_media_at DESC, ref ASC keyset pages.
+ALTER TABLE github_pr_activity ADD COLUMN title TEXT;
+ALTER TABLE github_pr_activity ADD COLUMN state TEXT;
+CREATE INDEX github_pr_activity_workspace_cursor_idx
+  ON github_pr_activity (workspace_name, last_media_at DESC, ref);

apps/api/migrations/20261004120200_file_metadata_gh_repo_idx.sql

@@ -0,0 +1,12 @@
+-- Newest-first scope reads (apps/api/src/pr-scope.ts: live links, Files
+-- views, the pager) and the By repo list. Partial on purpose: only `gh.repo`
+-- rows (one per GitHub-tagged object) pay the extra write, unlike the
+-- all-rows value index dropped in 20260722190000. Serves
+--   WHERE workspace = ? AND meta_key = 'gh.repo' AND meta_value = ?
+--   ORDER BY updated_at DESC, object_key ASC
+-- as a covering, in-order scan (no temp sort), so LIMIT stops early, and
+-- the distinct-repo GROUP BY reads only this index. Queries must use the
+-- literal 'gh.repo' (not a bound parameter) for SQLite to pick it.
+CREATE INDEX IF NOT EXISTS file_metadata_gh_repo_recent_idx
+  ON file_metadata (workspace, meta_value, updated_at DESC, object_key)
+  WHERE meta_key = 'gh.repo';

apps/api/package.json

@@ -21,6 +21,7 @@
     "./gallery-service": "./src/gallery-service.ts",
     "./feeds": "./src/feeds.ts",
     "./feed-service": "./src/feed-service.ts",
+    "./scope-wire": "./src/scope-wire.ts",
     "./external-references": "./src/external-references.ts",
     "./uploader-identity": "./src/uploader-identity.ts",
     "./github-comment-service": "./src/github-comment-service.ts",