feat: add Discuss and Explore subagents for dynamic critique and code exploration

- Implement Discuss Subagent for multi-perspective critique with dynamic perspectives.
- Create Explore Subagent for shared codebase exploration with centralized caching.
- Add tests for CcwToolsMcpCard component to ensure enabled tools are preserved on config save.
- Introduce SessionPreviewPanel component for previewing and selecting sessions for Memory V2 extraction.
- Develop CommandCreateDialog component for creating/importing commands with import and CLI generate modes.

.claude/skills/command-generator/phases/04-content-formatting.md

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+# Phase 4: Content Formatting
+
+Format template content by substituting placeholders with parameter values.
+
+## Objective
+
+Replace all placeholder variables in the template with validated parameter values:
+- `{{name}}` -> skillName
+- `{{description}}` -> description
+- `{{group}}` -> group (if provided)
+- `{{argumentHint}}` -> argumentHint (if provided)
+
+## Input
+
+From Phase 3:
+```javascript
+{
+  template: {
+    content: string,
+    requiredPlaceholders: string[],
+    optionalPlaceholders: string[]
+  },
+  targetPath: string,
+  params: {
+    skillName: string,
+    description: string,
+    location: string,
+    group: string | null,
+    argumentHint: string
+  }
+}
+```
+
+## Placeholder Mapping
+
+```javascript
+const placeholderMap = {
+  '{{name}}': params.skillName,
+  '{{description}}': params.description,
+  '{{group}}': params.group || '',
+  '{{argumentHint}}': params.argumentHint || ''
+};
+```
+
+## Execution Steps
+
+### Step 1: Initialize Content
+
+```javascript
+let formattedContent = template.content;
+```
+
+### Step 2: Substitute Required Placeholders
+
+```javascript
+// These must always be replaced
+formattedContent = formattedContent.replace(/\{\{name\}\}/g, params.skillName);
+formattedContent = formattedContent.replace(/\{\{description\}\}/g, params.description);
+```
+
+### Step 3: Handle Optional Placeholders
+
+```javascript
+// Group placeholder
+if (params.group) {
+  formattedContent = formattedContent.replace(/\{\{group\}\}/g, params.group);
+} else {
+  // Remove group line if not provided
+  formattedContent = formattedContent.replace(/^group: \{\{group\}\}\n?/gm, '');
+  formattedContent = formattedContent.replace(/\{\{group\}\}/g, '');
+}
+
+// Argument hint placeholder
+if (params.argumentHint) {
+  formattedContent = formattedContent.replace(/\{\{argumentHint\}\}/g, params.argumentHint);
+} else {
+  // Remove argument-hint line if not provided
+  formattedContent = formattedContent.replace(/^argument-hint: \{\{argumentHint\}\}\n?/gm, '');
+  formattedContent = formattedContent.replace(/\{\{argumentHint\}\}/g, '');
+}
+```
+
+### Step 4: Handle Conditional Sections
+
+```javascript
+// Remove empty frontmatter lines (caused by missing optional fields)
+formattedContent = formattedContent.replace(/\n{3,}/g, '\n\n');
+
+// Handle {{#if group}} style conditionals
+if (formattedContent.includes('{{#if')) {
+  // Process group conditional
+  if (params.group) {
+    formattedContent = formattedContent.replace(/\{\{#if group\}\}([\s\S]*?)\{\{\/if\}\}/g, '$1');
+  } else {
+    formattedContent = formattedContent.replace(/\{\{#if group\}\}[\s\S]*?\{\{\/if\}\}/g, '');
+  }
+  
+  // Process argumentHint conditional
+  if (params.argumentHint) {
+    formattedContent = formattedContent.replace(/\{\{#if argumentHint\}\}([\s\S]*?)\{\{\/if\}\}/g, '$1');
+  } else {
+    formattedContent = formattedContent.replace(/\{\{#if argumentHint\}\}[\s\S]*?\{\{\/if\}\}/g, '');
+  }
+}
+```
+
+### Step 5: Validate Final Content
+
+```javascript
+// Ensure no unresolved placeholders remain
+const unresolvedPlaceholders = formattedContent.match(/\{\{[^}]+\}\}/g);
+if (unresolvedPlaceholders) {
+  console.warn(`Warning: Unresolved placeholders found: ${unresolvedPlaceholders.join(', ')}`);
+}
+
+// Ensure frontmatter is valid
+const frontmatterMatch = formattedContent.match(/^---\n([\s\S]*?)\n---/);
+if (!frontmatterMatch) {
+  throw new Error('Generated content has invalid frontmatter structure');
+}
+```
+
+### Step 6: Generate Summary
+
+```javascript
+const summary = {
+  name: params.skillName,
+  description: params.description.substring(0, 50) + (params.description.length > 50 ? '...' : ''),
+  location: params.location,
+  group: params.group,
+  hasArgumentHint: !!params.argumentHint
+};
+```
+
+## Output
+
+```javascript
+{
+  status: 'formatted',
+  content: formattedContent,
+  targetPath: targetPath,
+  summary: summary
+}
+```
+
+## Content Example
+
+### Input Template
+```markdown
+---
+name: {{name}}
+description: {{description}}
+{{#if group}}group: {{group}}{{/if}}
+{{#if argumentHint}}argument-hint: {{argumentHint}}{{/if}}
+---
+
+# {{name}} Command
+```
+
+### Output (with all fields)
+```markdown
+---
+name: create
+description: Create structured issue from GitHub URL or text description
+group: issue
+argument-hint: [-y|--yes] <github-url | text-description> [--priority 1-5]
+---
+
+# create Command
+```
+
+### Output (minimal fields)
+```markdown
+---
+name: deploy
+description: Deploy application to production environment
+---
+
+# deploy Command
+```
+
+## Next Phase
+
+Proceed to [Phase 5: File Generation](05-file-generation.md) with `content` and `targetPath`.