feat(hooks): add rules-injector hook for .cursor/rules and .claude/rules support

Implements adaptive rule injection similar to Claude Code's rule system:
- Searches .cursor/rules and .claude/rules directories recursively
- Supports YAML frontmatter with globs, paths, alwaysApply, description
- Adaptive project root detection (finds markers even outside ctx.directory)
- Symlink duplicate detection via realpath comparison
- Content hash deduplication (SHA-256) to avoid re-injecting same rules
- picomatch-based glob pattern matching for file-specific rules

🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

src/index.ts

@@ -12,6 +12,7 @@ import {
   createThinkModeHook,
   createClaudeCodeHooksHook,
   createAnthropicAutoCompactHook,
+  createRulesInjectorHook,
 } from "./hooks";
 import {
   loadUserCommands,
@@ -157,6 +158,7 @@ const OhMyOpenCodePlugin: Plugin = async (ctx) => {
     disabledHooks: (pluginConfig.claude_code?.hooks ?? true) ? undefined : true,
   });
   const anthropicAutoCompact = createAnthropicAutoCompactHook(ctx);
+  const rulesInjector = createRulesInjectorHook(ctx);
 
   updateTerminalTitle({ sessionId: "main" });
 
@@ -220,6 +222,7 @@ const OhMyOpenCodePlugin: Plugin = async (ctx) => {
       await contextWindowMonitor.event(input);
       await directoryAgentsInjector.event(input);
       await directoryReadmeInjector.event(input);
+      await rulesInjector.event(input);
       await thinkMode.event(input);
       await anthropicAutoCompact.event(input);
 
@@ -339,6 +342,7 @@ const OhMyOpenCodePlugin: Plugin = async (ctx) => {
       await commentChecker["tool.execute.after"](input, output);
       await directoryAgentsInjector["tool.execute.after"](input, output);
       await directoryReadmeInjector["tool.execute.after"](input, output);
+      await rulesInjector["tool.execute.after"](input, output);
       await emptyTaskResponseDetector["tool.execute.after"](input, output);
 
       if (input.sessionID === getMainSessionID()) {