feat: pass workspace directory to OpencodeAI for project-level config discovery

- Add workspaceDir parameter to selectModel and importOpencodeAI functions
- Pass workingDirectory from Janitor to model selector
- Enables OpencodeAI to find project-level configuration and plugins
- Add .opencode/ to gitignore and npmignore

Author: Tarquinen

.gitignore

@@ -24,3 +24,6 @@ Thumbs.db
 *.swp
 *.swo
 *~
+
+# OpenCode
+.opencode/

.npmignore

@@ -18,3 +18,6 @@ lib/
 # Git
 .git/
 .gitignore
+
+# OpenCode
+.opencode/

lib/janitor.ts

@@ -261,7 +261,7 @@ export class Janitor {
                         })
                     }
 
-                    const modelSelection = await selectModel(currentModelInfo, this.logger, this.configModel)
+                    const modelSelection = await selectModel(currentModelInfo, this.logger, this.configModel, this.workingDirectory)
 
                     this.logger.info("janitor", "Model selected for analysis", {
                         sessionID,

lib/model-selector.ts

@@ -69,13 +69,13 @@ function shouldSkipProvider(providerID: string): boolean {
  * Attempts to import OpencodeAI with retry logic to handle plugin initialization timing issues.
  * Some providers (like openai via @openhax/codex) may not be fully initialized on first attempt.
  */
-async function importOpencodeAI(logger?: Logger, maxRetries: number = 3, delayMs: number = 100): Promise<any> {
+async function importOpencodeAI(logger?: Logger, maxRetries: number = 3, delayMs: number = 100, workspaceDir?: string): Promise<any> {
     let lastError: Error | undefined;
 
     for (let attempt = 1; attempt <= maxRetries; attempt++) {
         try {
             const { OpencodeAI } = await import('@tarquinen/opencode-auth-provider');
-            return new OpencodeAI();
+            return new OpencodeAI({ workspaceDir });
         } catch (error: any) {
             lastError = error;
 
@@ -117,13 +117,15 @@ async function importOpencodeAI(logger?: Logger, maxRetries: number = 3, delayMs
 export async function selectModel(
     currentModel?: ModelInfo, 
     logger?: Logger,
-    configModel?: string
+    configModel?: string,
+    workspaceDir?: string
 ): Promise<ModelSelectionResult> {
-    logger?.info('model-selector', 'Model selection started', { currentModel, configModel });
+    logger?.info('model-selector', 'Model selection started', { currentModel, configModel, workspaceDir });
 
     // Lazy import with retry logic - handles plugin initialization timing issues
     // Some providers (like openai via @openhax/codex) may not be ready on first attempt
-    const opencodeAI = await importOpencodeAI(logger);
+    // Pass workspaceDir so OpencodeAI can find project-level config and plugins
+    const opencodeAI = await importOpencodeAI(logger, 3, 100, workspaceDir);
 
     let failedModelInfo: ModelInfo | undefined;