perf: cache pre-tool metadata resolution

[lan17]

Summary

• Cache resolved Agent Control step catalogs briefly per agent/session/config so repeated before_tool_call hooks avoid recreating the OpenClaw tool list.
• Use OpenClaw's injected runtime session-store helpers when available, warm the default session store during gateway startup, and extend successful session metadata caching.
• Add behavioral coverage for catalog caching, session resolver warmup, runtime-backed lookup, and concurrent lookup dedupe.

Root Cause

The slow resolve_steps phase was dominated by createOpenClawCodingTools(...), which rebuilds the full OpenClaw tool surface on each tool call. The slow build_context phase was likely repeated session-store resolution/loading from the pre-tool hook path.

Validation

• npm run lint
• npm run typecheck
• npm test
• npm run coverage

[codecov-commenter]

Codecov Report

❌ Patch coverage is 80.67227% with 23 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/tool-catalog.ts	67.50%	10 Missing and 3 partials ⚠️
src/session-store.ts	84.84%	5 Missing and 5 partials ⚠️

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[galileo-automation]

🎉 This PR is included in version 1.8.2 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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