fix(nodes-tool): add exec approval flow for agent tool run action (#4726)

Merged via /review-pr -> /prepare-pr -> /merge-pr.

Prepared head SHA: b8ed4f1b6e4b1363c791dad153bf224b13f87ed3
Co-authored-by: rmorse <853547+rmorse@users.noreply.github.com>
Co-authored-by: steipete <58493+steipete@users.noreply.github.com>
Reviewed-by: @steipete

CHANGELOG.md

@@ -35,6 +35,7 @@ Docs: https://docs.openclaw.ai
 - Agents/Codex: allow `gpt-5.3-codex-spark` in forward-compat fallback, live model filtering, and thinking presets, and fix model-picker recognition for spark. (#14990) Thanks @L-U-C-K-Y.
 - OpenAI Codex/Auth: bridge OpenClaw OAuth profiles into `pi` `auth.json` so model discovery and models-list registry resolution can use Codex OAuth credentials. (#15184) Thanks @loiie45e.
 - Agents/Transcript policy: sanitize OpenAI/Codex tool-call ids during transcript policy normalization to prevent invalid tool-call identifiers from propagating into session history. (#15279) Thanks @divisonofficer.
+- Agents/Nodes: harden node exec approval decision handling in the `nodes` tool run path by failing closed on unexpected approval decisions, and add regression coverage for approval-required retry/deny/timeout flows. (#4726) Thanks @rmorse.
 - Models/Codex: resolve configured `openai-codex/gpt-5.3-codex-spark` through forward-compat fallback during `models list`, so it is not incorrectly tagged as missing when runtime resolution succeeds. (#15174) Thanks @loiie45e.
 - macOS Voice Wake: fix a crash in trigger trimming for CJK/Unicode transcripts by matching and slicing on original-string ranges instead of transformed-string indices. (#11052) Thanks @Flash-LHR.
 - Heartbeat: prevent scheduler silent-death races during runner reloads, preserve retry cooldown backoff under wake bursts, and prioritize user/action wake causes over interval/retry reasons when coalescing. (#15108) Thanks @joeykrug.