Add subagents for discussion, document generation, and code exploration

- Introduced Discuss Subagent for lightweight multi-perspective critique, reducing overhead from ~60-90s to ~5s.
- Added Doc Generation Subagent for generating documents with CLI analysis and template filling.
- Implemented Explore Subagent for centralized codebase exploration with caching, replacing the standalone explorer role.
- Created templates for architecture documents, epics, product briefs, and requirements PRD to standardize outputs.
- Added a review file for tracking changes and discussions.

.claude/skills/team-lifecycle/role-specs/analyst.md

@@ -0,0 +1,93 @@
+---
+role: analyst
+prefix: RESEARCH
+inner_loop: false
+discuss_rounds: [DISCUSS-001]
+subagents: [explore, discuss]
+message_types:
+  success: research_ready
+  progress: research_progress
+  error: error
+---
+
+# Analyst — Phase 2-4
+
+## Phase 2: Seed Analysis
+
+**Objective**: Extract structured seed information from the topic/idea.
+
+1. Extract session folder from task description (`Session: <path>`)
+2. Parse topic from task description (first non-metadata line)
+3. If topic starts with `@` or ends with `.md`/`.txt` → Read the referenced file as topic content
+4. Run Gemini CLI seed analysis:
+
+```
+Bash({
+  command: `ccw cli -p "PURPOSE: Analyze topic and extract structured seed information.
+TASK: * Extract problem statement * Identify target users * Determine domain context
+* List constraints and assumptions * Identify 3-5 exploration dimensions * Assess complexity
+TOPIC: <topic-content>
+MODE: analysis
+EXPECTED: JSON with: problem_statement, target_users[], domain, constraints[], exploration_dimensions[], complexity_assessment" --tool gemini --mode analysis`,
+  run_in_background: true
+})
+```
+
+5. Wait for CLI result, parse seed analysis JSON
+
+## Phase 3: Codebase Exploration (conditional)
+
+**Objective**: Gather codebase context if an existing project is detected.
+
+| Condition | Action |
+|-----------|--------|
+| package.json / Cargo.toml / pyproject.toml / go.mod exists | Explore codebase |
+| No project files | Skip → codebase context = null |
+
+**When project detected**: Call explore subagent with `angle: general`, `keywords: <from seed analysis>`.
+
+```
+Task({
+  subagent_type: "cli-explore-agent",
+  run_in_background: false,
+  description: "Explore general context",
+  prompt: "Explore codebase for: <topic>\nFocus angle: general\nKeywords: <seed analysis keywords>\nSession folder: <session-folder>\n..."
+})
+```
+
+Use exploration results to build codebase context: tech_stack, architecture_patterns, conventions, integration_points.
+
+## Phase 4: Context Packaging + Inline Discuss
+
+### 4a: Context Packaging
+
+**spec-config.json** → `<session-folder>/spec/spec-config.json`:
+- session_id, topic, status="research_complete", complexity, depth, focus_areas, mode="interactive"
+
+**discovery-context.json** → `<session-folder>/spec/discovery-context.json`:
+- session_id, phase=1, seed_analysis (all fields), codebase_context (or null), recommendations
+
+**design-intelligence.json** → `<session-folder>/analysis/design-intelligence.json` (UI mode only):
+- Produced when frontend keywords detected in seed_analysis
+- Fields: industry, style_direction, ux_patterns, color_strategy, typography, component_patterns
+
+### 4b: Inline Discuss (DISCUSS-001)
+
+Call discuss subagent with:
+- Artifact: `<session-folder>/spec/discovery-context.json`
+- Round: DISCUSS-001
+- Perspectives: product, risk, coverage
+
+Handle discuss verdict per team-worker consensus handling protocol.
+
+**Report**: complexity, codebase presence, problem statement, exploration dimensions, discuss verdict + severity, output paths.
+
+## Error Handling
+
+| Scenario | Resolution |
+|----------|------------|
+| Gemini CLI failure | Fallback to direct Claude analysis |
+| Codebase detection failed | Continue as new project |
+| Topic too vague | Report with clarification questions |
+| Explore subagent fails | Continue without codebase context |
+| Discuss subagent fails | Proceed without discuss, log warning |