docs(agents): regenerate AGENTS.md hierarchy with updated metrics and model configs

- 1208→1243 TS files (+35), 143k→155k LOC (+12k)
- Update all agent models: Sisyphus, Hephaestus, Oracle, Librarian, Atlas, Metis, Momus
- Add 6 new hook directories (39→45 dirs): beast-mode-system, hashline-edit-diff-enhancer, anthropic-image-context, task-reminder, compaction-todo-preserver, runtime-fallback
- Update category models: visual-engineering/artistry gemini-3-pro→gemini-3.1-pro
- Add 2 config schema files: fallback-models.ts, runtime-fallback.ts
- Timestamp: 2026-03-02 | Commit: 1c2caa09

🤖 Generated with assistance of [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

src/config/AGENTS.md

@@ -1,10 +1,10 @@
 # src/config/ — Zod v4 Schema System
 
-**Generated:** 2026-02-24
+**Generated:** 2026-03-02
 
 ## OVERVIEW
 
-22 schema files composing `OhMyOpenCodeConfigSchema`. Zod v4 validation with `safeParse()`. All fields optional — omitted fields use plugin defaults.
+24 schema files composing `OhMyOpenCodeConfigSchema`. Zod v4 validation with `safeParse()`. All fields optional — omitted fields use plugin defaults.
 
 ## SCHEMA TREE
 
@@ -29,6 +29,8 @@ config/schema/
 ├── git-master.ts               # commit_footer: boolean | string
 ├── browser-automation.ts       # provider: playwright | agent-browser | playwright-cli
 ├── background-task.ts          # Concurrency limits per model/provider
+├── fallback-models.ts          # FallbackModelsConfigSchema
+├── runtime-fallback.ts         # RuntimeFallbackConfigSchema
 ├── babysitting.ts              # Unstable agent monitoring
 ├── dynamic-context-pruning.ts  # Context pruning settings
 ├── start-work.ts              # StartWorkConfigSchema (auto_commit)