docs: AGENTS.example.md names the surfaces that load from ~/.openmax/

[Max17190]

Why

Follow-up to #223. The trimmed AGENTS.example.md said the file surfaces the system prompt names "each also load from ~/.openmax/". Two of them do not: memory is project-only (.openmax/memory/, memory.rs), and providers is global-only (~/.openmax/providers.json). The file's own Development rule is "never invent paths or claim missing features", so the sentence has to be exact.

Summary

• Name the five surfaces that do have a ~/.openmax/ mirror: tools, skills, prompt templates, hooks, permissions (registry::external_tool_dirs, skills::skill_dirs, templates::template_dirs, hooks::hook_dirs, permissions::permission_files), project winning on a name collision as README and docs/extending.md state.
• Drop "(run it after writing one)": the frozen prompt already says "Verify what you wrote with bash: openmax --check" on every request, so the template was paying for it twice.
• 1,953 bytes; agents_example_fits_the_injection_cap stays green.

Test Plan

• cargo test -p open-max-core --lib agents_example_fits_the_injection_cap: passes at 1,953 bytes.
• The five global directories named are the ones each loader reads (file:line above); memory and providers are the two the sentence no longer claims.

Greptile Summary

This update makes the example project instructions accurately name the five extension surfaces that can load from ~/.openmax/: tools, skills, prompt templates, hooks, and permissions. The project-first precedence guidance remains intact. Focused checks confirmed those loading and precedence behaviors, and the revised example remains within the instruction-injection limit.

Confidence Score: 5/5

Safe to merge: the updated documentation matches the implemented extension-loading behavior.

Focused Rust tests passed for the instruction-size guard and project-over-global precedence across tools, skills, prompt templates, hooks, and permissions. The revised example measured 1,954 bytes, below the 2,000-byte limit.

Files Needing Attention: No files need further attention.

T-Rex Logs

What T-Rex did

• The AGENTS.example.md documentation file was measured before and after the update, and the revised size is 1,954 bytes, staying under the 2,000-byte injection limit.
• Six focused Rust tests covering the injection cap and global precedence for tools, skills, prompt templates, hooks, and permissions were run, and all passed.
• The checks confirm that the documentation describes the implemented global-loading surfaces and precedence behavior.

_{Ran code and verified through T-Rex}

_{Reviews (1): Last reviewed commit: "docs: AGENTS.example.md names the surfac..." | Re-trigger Greptile}