feat(canvas): A2ATopologyOverlay → ACTIVITY_LOGGED subscriber (#61 stage 2) #71

Merged

claude-ceo-assistant merged 4 commits from feat/canvas-topology-overlay-ws-subscribe into main 2026-05-07 23:18:27 +00:00

Conversation 0 Commits 4 Files Changed 2 +259 -18

4 Commits

Author	SHA1	Message	Date
security-auditor	7d0df65474	Merge remote-tracking branch 'origin/main' into feat/canvas-topology-overlay-ws-subscribe	2026-05-07 16:04:29 -07:00
security-auditor	b73f599184	Merge remote-tracking branch 'origin/main' into feat/canvas-topology-overlay-ws-subscribe	2026-05-07 15:56:52 -07:00
security-auditor	9bb4bbdff7	Merge remote-tracking branch 'origin/main' into feat/canvas-topology-overlay-ws-subscribe	2026-05-07 15:54:03 -07:00
security-auditor	7194b08987	feat(canvas): A2ATopologyOverlay subscribes to ACTIVITY_LOGGED — drop 60s polling ... Stage 2 of #61. Replaces the 60s setInterval poll that fanned out across every visible workspace fetching `?type=delegation&limit=500` with: 1. One bootstrap fan-out on mount (or on visible-ID-set change), same shape as before — preserves the 60-min look-back history. 2. useSocketEvent subscription to ACTIVITY_LOGGED — every event with activity_type=delegation + method=delegate from a visible workspace appends to a local rolling buffer, edges are re-derived via the existing buildA2AEdges helper. 3. showA2AEdges toggle off: clears edges + buffer. No interval poll. The visibleIdsKey selector gate that fixed the 2026-05-04 render-loop incident is preserved — peer-discovery / status-flip writes still don't trigger a wasteful re-bootstrap. Steady-state HTTP traffic from this overlay drops from N req/min (N visible workspaces × 1 cycle/min) to 0 outside of mount + visible- ID-set-change bootstraps. Live update latency drops from up to 60s to ~10ms. Bootstrap race-aware: any WS arrivals that landed in the buffer during the fetch await are preserved by id-dedup-with-fetched-first ordering. No row is double-counted; no row is lost during in-flight updates. Test changes: - 27 existing tests pass unchanged (buildA2AEdges purity preserved, component visibility/visibleIdsKey/error-swallow behaviour preserved). - 6 new WS-subscription tests: - NO 60s polling after bootstrap (clock advance fires nothing) - WS push for delegation updates edges with NO HTTP call - WS push for non-delegation activity_type ignored - WS push for delegate_result ignored (mirrors buildA2AEdges method filter) - WS push from hidden workspace ignored - WS push while showA2AEdges=false ignored Mutation-tested: - drop activity_type filter → "non-delegation" test fails - drop method===delegate filter → "delegate_result" test fails - drop visible-ws membership filter → "hidden workspace" test fails Full canvas suite: 1395 passing, 0 failing. tsc clean. No API or schema change. ACTIVITY_LOGGED event shape unchanged. The /workspaces/:id/activity HTTP endpoint stays — used for bootstrap. Hostile self-review (three weakest spots): 1. Bootstrap fetches up to 500 rows × N workspaces. Worst-case buffer ~3000 entries before window-prune. Acceptable: window- prune runs on every recomputeAndPush, buildA2AEdges aggregates to at most N² edges. Real-world usage stays well under both. 2. WS handler re-arms on every bootstrap dependency change (visibleIds change). useSocketEvent's ref-based pattern means the bus subscription stays stable across renders, but the handler closure re-captures bootstrap each time. Side effect: fine — handler invocation just calls recomputeAndPush which is idempotent. 3. delegate_result rows arriving over WS are silently dropped. Acceptable: the existing buildA2AEdges already filters them out at aggregation time (avoids double-counting); pre-filtering at the WS handler is the correct mirror — keeps the bus path and the bootstrap path consistent. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-05-07 15:17:19 -07:00