fix(rules-injector): respect claude_code config for user rule loading

When claude_code integration is disabled in oh-my-opencode.json, the
rules-injector now skips loading rules from ~/.claude/rules/ to prevent
Claude Code-specific instructions from leaking into non-Claude agents
(e.g., GPT-5.4 Sisyphus), which causes agent hallucination.

Also adds ~/.sisyphus/rules/ and ~/.opencode/rules/ as OpenCode-native
user rule directories that are always searched regardless of config.

Fixes #2920

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/hooks/rules-injector/hook.ts

@@ -32,6 +32,7 @@ const TRACKED_TOOLS = ["read", "write", "edit", "multiedit"];
 export function createRulesInjectorHook(
   ctx: PluginInput,
   modelCacheState?: { anthropicContext1MEnabled: boolean },
+  options?: { skipClaudeUserRules?: boolean },
 ) {
   const truncator = createDynamicTruncator(ctx, modelCacheState);
   const { getSessionCache, clearSessionCache } = createSessionCacheStore();
@@ -39,6 +40,9 @@ export function createRulesInjectorHook(
     workspaceDirectory: ctx.directory,
     truncator,
     getSessionCache,
+    ruleFinderOptions: options?.skipClaudeUserRules
+      ? { skipClaudeUserRules: true }
+      : undefined,
   });
 
   const toolExecuteAfter = async (