feat(omo-claude): vendor rules component with CC patches

model/turn_id optional (SessionStart keeps model), CLAUDE_PLUGIN_ROOT/DATA env
fallback, .claude-plugin manifest path, PostToolUse matcher Write|Edit|MultiEdit,
OMO_CLAUDE_RULES_* env aliases, bundled-rules vendored. Injects w/o turn_id (QA).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/omo-claude/plugin/components/rules/skills/rules/SKILL.md

@@ -0,0 +1,34 @@
+---
+name: rules
+description: Use when the user asks about Codex Rules behavior, injected project rules, supported rule file locations, matching, or environment configuration.
+---
+
+# Codex Rules
+
+Codex Rules is automatic once the plugin is enabled. It injects:
+
+- static project instructions on `SessionStart` and `UserPromptSubmit`
+- matching file-specific rules after Codex `apply_patch` by default
+
+Dynamic `PostToolUse` output is injected as additional context and is deduplicated per plugin data session. Codex Rules does not rewrite tool output.
+
+Supported project sources:
+
+- `AGENTS.md`
+- `CLAUDE.md`
+- `CONTEXT.md`
+- `.sisyphus/rules/**/*.md`
+- `.claude/rules/**/*.md`
+- `.cursor/rules/**/*.md`
+- `.github/instructions/**/*.md`
+- `.github/copilot-instructions.md`
+
+Supported environment knobs:
+
+- `CODEX_RULES_DISABLED=1`
+- `CODEX_RULES_MODE=both|static|dynamic|off`
+- `CODEX_RULES_MAX_RULE_CHARS=<number>`
+- `CODEX_RULES_MAX_RESULT_CHARS=<number>`
+- `CODEX_RULES_ENABLED_SOURCES=AGENTS.md,.sisyphus/rules`
+
+The legacy `PI_RULES_*` variables are accepted as fallbacks for users migrating from `pi-rules`.