Why: The base gate (cmdbus.RequiresProjectWorkDecision) refuses rdm.review.doc.approve/reject/final unless the request carries a committed conversation source as top-level conversationId and anchorMessageId. The workspace sent bare params, so the decision buttons were refused in the real product.
Evidence: vitest 39 files / 441 tests passed (22 new in test/document-decision.test.ts); npx tsc --noEmit clean; npm run build ok; check-knip unused exports 51 <= 51; e2e/document-renderer.playwright.ts type-checks and lists 13 tests. Request shape from pins/agent-system-backend: internal/server/server.go:1276-1304 (body decode), internal/cmdbus/cmdbus.go:109-134 and 385, internal/app/app.go:646-665 (preflight), server.go:1010-1150 (message POST returns the committed message).
Impact: approve/reject/final first post a Chinese decision message to the host project's 文档审签记录 conversation (reused, or created), then dispatch with its id as the anchor (entrance button). Identity is never sent. Any failing step shows a readable refusal and nothing is dispatched. Double-click is ignored while an action is in flight, and retries reuse the operation id so the server returns the same source message. rdmCommand takes an optional source; rdm.render.* is unchanged. The e2e spec drives §11-5c through the workspace only and asserts the anchored, committed receipt. Not run against a live backend or browser here.
Refs: unified renderer plan Task 11; RDM cmdbus gate (pins/agent-system-backend internal/cmdbus/cmdbus.go:109-134); live-verify sequence /tmp/live-verify/run.sh lines 56-70 and 140-146.
Co-authored-by: Cursor <cursoragent@cursor.com>
