feat(review): support multi-repo workspace reviews (#543)

* feat(review): support multi-repo workspace reviews (#527)

* fix(workspace): address critical issues from deep review

- Fix race condition in label generation by pre-computing labels sequentially
- Fix rewritePatchLine to support quoted paths and rename/copy headers
- Add separator between aggregated patches to avoid invalid diffs
- Normalize input paths in resolveWorkspaceFilePath
- Add timeout to PR discovery (15s) to prevent server hangs
- Fix PATCH /api/workspace/repo to rollback state on failure via applyRepoMutation
- Validate body.source runtime (must be 'local' or 'pr')
- Snapshot active repo in agent jobs at launch to prevent race in onJobComplete
- Prevent double-prefixing of agent findings when paths are already prefixed
- Fix frontend findWorkspaceRepoForPath to use longest-prefix matching
- Fix shared types: diffType uses DiffType, platformUser is string | null

* fix: remove duplicate gitRuntime export in vcs.ts

* fix: resolve remaining merge conflict in local review mode, remove stale detectManagedVcs import

* Add local multi-repo workspace review support

* Fix workspace review edge cases

* Remove session query from browser launch

* Add switchable workspace review modes

* fix(review): cover opencode workspace bridge

* fix(review): clean workspace review plumbing

* fix(review): clarify workspace agent finding paths

* fix(review): preserve diff paths with spaces

---------

Co-authored-by: Michael Ramos <mdramos8@gmail.com>

packages/server/package.json

@@ -17,6 +17,7 @@
     "./p4": "./p4.ts",
     "./vcs": "./vcs.ts",
     "./repo": "./repo.ts",
+    "./review-workspace": "./review-workspace.ts",
     "./share-url": "./share-url.ts",
     "./sessions": "./sessions.ts",
     "./project": "./project.ts",