fix(opencode): remove incorrect mode: primary and restore name field in templates (#1644)

Remove hallucinated mode: primary from opencode-agent template - OpenCode
defaults to mode: all and mode: primary does not enable Tab-switching as
the original PR #1556 claimed. Restore the name frontmatter field across
all OpenCode templates to match the standard pattern used by other IDEs.

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

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

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

@@ -1,10 +1,12 @@
 ---
+name: '{{name}}'
 description: '{{description}}'
 ---
 
 Execute the BMAD '{{name}}' task.
 
 TASK INSTRUCTIONS:
+
 1. LOAD the task file from {project-root}/{{bmadFolderName}}/{{path}}
 2. READ its entire contents
 3. FOLLOW every instruction precisely as specified

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

@@ -1,10 +1,12 @@
 ---
+name: '{{name}}'
 description: '{{description}}'
 ---
 
 Execute the BMAD '{{name}}' tool.
 
 TOOL INSTRUCTIONS:
+
 1. LOAD the tool file from {project-root}/{{bmadFolderName}}/{{path}}
 2. READ its entire contents
 3. FOLLOW every instruction precisely as specified

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

@@ -1,4 +1,5 @@
 ---
+name: '{{name}}'
 description: '{{description}}'
 ---
 
@@ -7,6 +8,7 @@ Execute the BMAD '{{name}}' workflow.
 CRITICAL: You must load and follow the workflow definition exactly.
 
 WORKFLOW INSTRUCTIONS:
+
 1. LOAD the workflow file from {project-root}/{{bmadFolderName}}/{{path}}
 2. READ its entire contents
 3. FOLLOW every step precisely as specified

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

@@ -1,4 +1,5 @@
 ---
+name: '{{name}}'
 description: '{{description}}'
 ---
 
@@ -7,6 +8,7 @@ Execute the BMAD '{{name}}' workflow.
 CRITICAL: You must load and follow the workflow definition exactly.
 
 WORKFLOW INSTRUCTIONS:
+
 1. LOAD the workflow file from {project-root}/{{bmadFolderName}}/{{path}}
 2. READ its entire contents
 3. FOLLOW every step precisely as specified