fix(opencode): use mode: all in agent template, remove name frontmatter, fix directory names

- Replace name: '{{name}}' with mode: all in opencode-agent.md
  mode: all enables both Tab-key agent switching in the TUI and @subagent
  invocation via the Task tool (mode: primary blocked subagent use)
- Remove name: '{{name}}' from opencode-task/tool/workflow/workflow-yaml templates
  OpenCode derives command name from filename, not from a name frontmatter field;
  the bare {{name}} value was overriding the bmad- prefixed filename causing
  name collisions with built-in OpenCode commands (fixes #1762)
- Fix deprecated singular directory names in platform-codes.yaml:
  .opencode/agent -> .opencode/agents, .opencode/command -> .opencode/commands
- Add legacy_targets migration: cleanup() now removes stale bmad-* files from
  old singular directories on reinstall so existing users don't get duplicates
- Fix removeEmptyParents to continue walking up to parent when starting dir is
  already absent instead of breaking early

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tools/cli/installers/lib/ide/_config-driven.js

@@ -453,6 +453,14 @@ LOAD and execute from: {project-root}/{{bmadFolderName}}/{{path}}
    * @param {string} projectDir - Project directory
    */
   async cleanup(projectDir, options = {}) {
+    // Migrate legacy target directories (e.g. .opencode/agent → .opencode/agents)
+    if (this.installerConfig?.legacy_targets) {
+      for (const legacyDir of this.installerConfig.legacy_targets) {
+        await this.cleanupTarget(projectDir, legacyDir, options);
+        await this.removeEmptyParents(projectDir, legacyDir);
+      }
+    }
+
     // Clean all target directories
     if (this.installerConfig?.targets) {
       const parentDirs = new Set();
@@ -544,7 +552,10 @@ LOAD and execute from: {project-root}/{{bmadFolderName}}/{{path}}
       last = current;
       const fullPath = path.join(projectDir, current);
       try {
-        if (!(await fs.pathExists(fullPath))) break;
+        if (!(await fs.pathExists(fullPath))) {
+          current = path.dirname(current);
+          continue;
+        }
         const remaining = await fs.readdir(fullPath);
         if (remaining.length > 0) break;
         await fs.rmdir(fullPath);

tools/cli/installers/lib/ide/platform-codes.yaml

@@ -131,11 +131,14 @@ platforms:
     category: ide
     description: "OpenCode terminal coding assistant"
     installer:
+      legacy_targets:
+        - .opencode/agent
+        - .opencode/command
       targets:
-        - target_dir: .opencode/agent
+        - target_dir: .opencode/agents
           template_type: opencode
           artifact_types: [agents]
-        - target_dir: .opencode/command
+        - target_dir: .opencode/commands
           template_type: opencode
           artifact_types: [workflows, tasks, tools]
 

tools/cli/installers/lib/ide/templates/combined/opencode-agent.md

@@ -1,5 +1,5 @@
 ---
-name: '{{name}}'
+mode: all
 description: '{{description}}'
 ---
 

tools/cli/installers/lib/ide/templates/combined/opencode-task.md

@@ -1,5 +1,4 @@
 ---
-name: '{{name}}'
 description: '{{description}}'
 ---
 

tools/cli/installers/lib/ide/templates/combined/opencode-tool.md

@@ -1,5 +1,4 @@
 ---
-name: '{{name}}'
 description: '{{description}}'
 ---
 

tools/cli/installers/lib/ide/templates/combined/opencode-workflow-yaml.md

@@ -1,5 +1,4 @@
 ---
-name: '{{name}}'
 description: '{{description}}'
 ---
 

tools/cli/installers/lib/ide/templates/combined/opencode-workflow.md

@@ -1,5 +1,4 @@
 ---
-name: '{{name}}'
 description: '{{description}}'
 ---