docs: add module-level AGENTS.md for mcp-oauth, atlas, rules-injector, background-task, call-omo-agent, lsp

🤖 Generated with assistance of [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)
2026-02-19 03:15:27 +09:00
parent 73514ed329
commit a28e989f83
6 changed files with 345 additions and 0 deletions
@@ -0,0 +1,53 @@
+# src/hooks/rules-injector/ — Conditional Rules Injection
+
+**Generated:** 2026-02-19
+
+## OVERVIEW
+
+19 files (~1604 LOC). The `rulesInjectorHook` — Tool Guard Tier hook that auto-injects AGENTS.md (and similar rule files) into context when a file in a directory is read, written, or edited. Proximity-based: closest rule file to the target path wins.
+
+## HOW IT WORKS
+
+```
+tool.execute.after (read/write/edit/multiedit)
+  → Extract file path from tool output
+  → Find rule files near that path (finder.ts)
+  → Already injected this session? (cache.ts)
+  → Inject rule content into tool output (injector.ts)
+```
+
+## TRACKED TOOLS
+
+`["read", "write", "edit", "multiedit"]` — triggers only on file manipulation tools.
+
+## KEY FILES
+
+| File | Purpose |
+|------|---------|
+| `hook.ts` | `createRulesInjectorHook()` — wires cache + injector, handles tool events |
+| `injector.ts` | `createRuleInjectionProcessor()` — orchestrates find → cache → inject |
+| `finder.ts` | `findRuleFiles()` + `calculateDistance()` — locate AGENTS.md near target path |
+| `rule-file-finder.ts` | Walk directory tree to find AGENTS.md / .rules files |
+| `rule-file-scanner.ts` | Scan for rule files in a directory |
+| `matcher.ts` | Match file paths against rule file scope |
+| `rule-distance.ts` | Calculate path distance between file and rule file |
+| `project-root-finder.ts` | Find project root (stops at .git, package.json) |
+| `output-path.ts` | Extract file paths from tool output text |
+| `cache.ts` | `createSessionCacheStore()` — per-session injection dedup |
+| `storage.ts` | Persist injected paths across tool calls |
+| `parser.ts` | Parse rule file content |
+| `constants.ts` | Rule file names: `AGENTS.md`, `.rules`, `CLAUDE.md` |
+| `types.ts` | `RuleFile`, `InjectionResult`, `RuleFileScope` |
+
+## RULE FILE DISCOVERY
+
+Priority (closest → farthest from target file):
+1. Same directory as target file
+2. Parent directories up to project root
+3. Project root itself
+
+Same-distance tie: all injected. Per-session dedup prevents re-injection.
+
+## TRUNCATION
+
+Uses `DynamicTruncator` — adapts injection size based on model context window (1M context models get full content, smaller models get truncated summaries).