examples(pi-task): two more real read-only task specs, both PASS with pointers verified 9/9

- task-pi-devbox-node22-pins.json: node-24 change-set. Result: Dockerfile.base:557
  is the SOLE hard pin; the real find is that NO test asserts the node major
  (smoke-test.sh:94 is plain run(), not run_expect), so a bump passes silently.
- task-ci-watcher-infra-vs-code.json: infra-vs-code CI failure. The delegate
  REJECTED the proposed zero-log-bytes heuristic on three false-positive grounds
  plus unreachability, and pointed at a better signal already fetched and unused
  (started_at -> RUN_START_TS, read only at watcher-hub-only.sh:266-267).

Both specs assert only measured facts, including the retracted node-24/agent-browser
claim, so the delegate could not resurrect it.

examples/task-pi-devbox-node22-pins.json

@@ -0,0 +1,29 @@
+{
+  "id": "pi-devbox-node22-pins",
+  "goal": "pi-devbox currently ships node 22 and a move to node 24 is being considered. Enumerate EVERY place in the repo where the node major version is pinned, floored, asserted or merely documented, and classify each by what it would take to move to node 24.",
+  "deliverable": "1) A table with one row per occurrence: file:line -> the exact pinning text -> classification (HARD PIN that selects the version | FLOOR/minimum check | TEST ASSERTION | DOC/PROSE mention only) -> what actually breaks or goes stale on a node-24 bump. 2) The minimal ordered change-set to move to node 24, listing only the rows that are load-bearing. 3) Call out separately any place where a node version is asserted inside a TEST or SANITY SCRIPT such that a bump would make the test fail, or worse, silently pass while checking the wrong thing. 4) State explicitly whether the two Dockerfiles agree with each other on the node version, with file:line for both. Do NOT edit anything.",
+  "effort": "balanced",
+  "read_only": true,
+  "roots": ["/workspace/pi-devbox"],
+  "context": {
+    "facts": [
+      "Repo is /workspace/pi-devbox at commit aa0fbc5, tag v1.8.13, working tree clean.",
+      "MEASURED: 16 files mention 'node' case-insensitively (excluding .git): rootfs/usr/local/share/pi-devbox/skills/mempalace/SKILL.md, rootfs/usr/local/share/pi-devbox/skills/pi-extensions/SKILL.md, THIRD_PARTY.md, CHANGELOG.md, DOCKER_HUB.md, .gitea/workflows/docker-publish.yml, docs/mempalace-broker-design.md, docs/observational-memory.md, README.md, Dockerfile.variant, scripts/recreate-sanity-check.sh, scripts/smoke-test.sh, AGENTS.md, entrypoint.sh, Dockerfile.base, entrypoint-user.sh. Start from this list; you may still grep for NODE_VERSION, nodejs, nvm, n_ or numeric '22' patterns in case a pin does not contain the word 'node'.",
+      "MEASURED: the shipped v1.8.13 image runs node v22.23.2.",
+      "MEASURED and IMPORTANT: agent-browser 0.36.0 runs correctly on node 22 — proven at runtime on linux/arm64 on 2026-09-07. An earlier claim that agent-browser 0.36.0 requires node >= 24 was RETRACTED as false. Do not treat any node-24 requirement from agent-browser as real unless you find a hard engines/version check in this repo and can point at it.",
+      "Dockerfile.base and Dockerfile.variant are the two image definitions; the variant builds FROM the base."
+    ],
+    "files": [
+      "/workspace/pi-devbox/Dockerfile.base",
+      "/workspace/pi-devbox/Dockerfile.variant",
+      "/workspace/pi-devbox/scripts/recreate-sanity-check.sh",
+      "/workspace/pi-devbox/scripts/smoke-test.sh",
+      "/workspace/pi-devbox/.gitea/workflows/docker-publish.yml"
+    ],
+    "commands": [
+      "grep -rniE 'node|nodejs|NODE_VERSION' /workspace/pi-devbox --include='*' --exclude-dir=.git",
+      "grep -rnE '\\b2[24]\\b' /workspace/pi-devbox/Dockerfile.base /workspace/pi-devbox/Dockerfile.variant"
+    ]
+  },
+  "budget": {"wall_s": 700, "usd": 1.0}
+}