chore(acp): bump dimcode and grok registry pins to probed versions

[kaizhou-lab]

Summary

Scheduled ACP Registry version sync. Two npx pins drifted since #750, each backed by a fresh serial ACP probe of the exact pinned version. Lock-only change — two lines; no metadata, migration, or entrypoint edits, and no lock-derived test assertion embeds either version.

backend	package	old → new	initialize	session/new
dimcode	dimcode	0.3.1 → 0.3.2	ok (agentInfo dimcode "DimCode" 0.3.2)	auth required (-32000, "Provider credentials are required")
grok	@xai-official/grok	0.2.118 → 0.2.119	ok (protocolVersion 1)	auth required (-32000, "no auth method id provided")

Both meet the release-lock criterion: initialize succeeds and session/new returns a clearly classified authentication requirement. Probes ran serially with no inherited HOME or credentials.

The other 9 Registry-pinned packages (autohand, codebuddy, deepagents, dirac, glm-acp-agent, kilo, nova, pi, sigit) match the snapshot exactly — no drift. Package names and entrypoint args are unchanged for all 11. Drifted but not upgraded: none. The mimo-code and omp entries are non-Registry builtins (no registry_json_id) and are correctly excluded from drift reconciliation.

Registry snapshot

• Audit pinned to release tag v2026.08.03-e5290cd of agentclientprotocol/registry (newest release at audit time), fetched via the versioned CDN path for reproducibility.
• No newly listed and no delisted agents versus the previous baseline (38 ids).

Validation

• cargo test -p aionui-runtime -p aionui-ai-agent — pass (882 lib + integration tests)
• Full just push gate (migration check, lint, fmt, cargo nextest run --workspace) — pass
• Gate run with the host-injected AIONUI_LOG_DIR unset (pre-existing environment sensitivity, see chore(acp): bump registry npx lock to probed versions #695)
• Gate started only after host load fell below the pre-flight threshold; the targeted test run had pushed the 12-core host to load 79, which is the condition that produced spurious subprocess-spawn timeouts in chore(acp): bump dirac and nova registry pins to probed versions #750's history.

Logging

No logging changes: lock-only version bumps; existing startup/session error paths already identify a failing agent by backend.