feat(spec-generator): add Phase 1.5 requirement expansion & clarification

Insert interactive requirement discussion stage between Discovery and Product Brief to address missing requirement depth analysis. Phase 1.5 uses Gemini CLI for gap analysis, supports multi-round interactive discussion (max 5 rounds), and outputs refined-requirements.json as high-quality input for downstream phases. Compatible with -y auto mode.
2026-02-27 09:13:07 +08:00 · 2026-02-25 19:42:45 +08:00
parent eb9a62e085
commit 4c2bf31525
5 changed files with 536 additions and 19 deletions
--- a/.claude/skills/spec-generator/SKILL.md
+++ b/.claude/skills/spec-generator/SKILL.md
@@ -11,21 +11,23 @@ Structured specification document generator producing a complete specification p
 ## Architecture Overview

 ```
-Phase 0: Specification Study (Read specs/ + templates/ - mandatory prerequisite)
-         |
-Phase 1: Discovery           -> spec-config.json + discovery-context.json
-         |
-Phase 2: Product Brief       -> product-brief.md  (multi-CLI parallel analysis)
-         |
-Phase 3: Requirements (PRD)  -> requirements/  (_index.md + REQ-*.md + NFR-*.md)
-         |
-Phase 4: Architecture        -> architecture/  (_index.md + ADR-*.md, multi-CLI review)
-         |
-Phase 5: Epics & Stories     -> epics/  (_index.md + EPIC-*.md)
-         |
-Phase 6: Readiness Check     -> readiness-report.md + spec-summary.md
-         |
-         Handoff to execution workflows
+Phase 0:   Specification Study (Read specs/ + templates/ - mandatory prerequisite)
+           |
+Phase 1:   Discovery               -> spec-config.json + discovery-context.json
+           |
+Phase 1.5: Req Expansion           -> refined-requirements.json (interactive discussion + CLI gap analysis)
+           |                           (-y auto mode: auto-expansion, skip interaction)
+Phase 2:   Product Brief            -> product-brief.md  (multi-CLI parallel analysis)
+           |
+Phase 3:   Requirements (PRD)      -> requirements/  (_index.md + REQ-*.md + NFR-*.md)
+           |
+Phase 4:   Architecture            -> architecture/  (_index.md + ADR-*.md, multi-CLI review)
+           |
+Phase 5:   Epics & Stories         -> epics/  (_index.md + EPIC-*.md)
+           |
+Phase 6:   Readiness Check         -> readiness-report.md + spec-summary.md
+           |
+           Handoff to execution workflows
 ```

 ## Key Design Principles
@@ -79,6 +81,16 @@ Phase 1: Discovery & Seed Analysis
   |- User confirmation (interactive, -y skips)
   |- Output: spec-config.json, discovery-context.json (optional)

+Phase 1.5: Requirement Expansion & Clarification
+   |- Ref: phases/01-5-requirement-clarification.md
+   |- CLI gap analysis: completeness scoring, missing dimensions detection
+   |- Multi-round interactive discussion (max 5 rounds)
+   |  |- Round 1: present gap analysis + expansion suggestions
+   |  |- Round N: follow-up refinement based on user responses
+   |- User final confirmation of requirements
+   |- Auto mode (-y): CLI auto-expansion without interaction
+   |- Output: refined-requirements.json
+
 Phase 2: Product Brief
   |- Ref: phases/02-product-brief.md
   |- 3 parallel CLI analyses: Product (Gemini) + Technical (Codex) + User (Claude)
@@ -148,6 +160,7 @@ Bash(`mkdir -p "${workDir}"`);
 .workflow/.spec/SPEC-{slug}-{YYYY-MM-DD}/
 ├── spec-config.json              # Session configuration + phase state
 ├── discovery-context.json        # Codebase exploration results (optional)
+├── refined-requirements.json     # Phase 1.5: Confirmed requirements after discussion
 ├── product-brief.md              # Phase 2: Product brief
 ├── requirements/                 # Phase 3: Detailed PRD (directory)
 │   ├── _index.md                 #   Summary, MoSCoW table, traceability, links
@@ -184,8 +197,10 @@ Bash(`mkdir -p "${workDir}"`);
    "dimensions": []
  },
  "has_codebase": false,
+  "refined_requirements_file": "refined-requirements.json",
  "phasesCompleted": [
    { "phase": 1, "name": "discovery", "output_file": "spec-config.json", "completed_at": "ISO8601" },
+    { "phase": 1.5, "name": "requirement-clarification", "output_file": "refined-requirements.json", "discussion_rounds": 2, "completed_at": "ISO8601" },
    { "phase": 3, "name": "requirements", "output_dir": "requirements/", "output_index": "requirements/_index.md", "file_count": 8, "completed_at": "ISO8601" }
  ]
 }
@@ -211,6 +226,12 @@ Bash(`mkdir -p "${workDir}"`);
 | [phases/01-discovery.md](phases/01-discovery.md) | Seed analysis and session setup | Phase start |
 | [specs/document-standards.md](specs/document-standards.md) | Frontmatter format for spec-config.json | Config generation |

+### Phase 1.5: Requirement Expansion & Clarification
+| Document | Purpose | When to Use |
+|----------|---------|-------------|
+| [phases/01-5-requirement-clarification.md](phases/01-5-requirement-clarification.md) | Interactive requirement discussion workflow | Phase start |
+| [specs/quality-gates.md](specs/quality-gates.md) | Quality criteria for refined requirements | Validation |
+
 ### Phase 2: Product Brief
 | Document | Purpose | When to Use |
 |----------|---------|-------------|
@@ -254,6 +275,9 @@ Bash(`mkdir -p "${workDir}"`);
 |-------|-------|-----------|--------|
 | Phase 1 | Empty input | Yes | Error and exit |
 | Phase 1 | CLI seed analysis fails | No | Use basic parsing fallback |
+| Phase 1.5 | Gap analysis CLI fails | No | Skip to user questions with basic prompts |
+| Phase 1.5 | User skips discussion | No | Proceed with seed_analysis as-is |
+| Phase 1.5 | Max rounds reached (5) | No | Force confirmation with current state |
 | Phase 2 | Single CLI perspective fails | No | Continue with available perspectives |
 | Phase 2 | All CLI calls fail | No | Generate basic brief from seed analysis |
 | Phase 3 | Gemini CLI fails | No | Use codex fallback |
--- a/.claude/skills/spec-generator/phases/01-5-requirement-clarification.md
+++ b/.claude/skills/spec-generator/phases/01-5-requirement-clarification.md
@@ -0,0 +1,404 @@
+# Phase 1.5: Requirement Expansion & Clarification
+
+在进入正式文档生成前，通过多轮交互讨论对原始需求进行深度挖掘、扩展和确认。
+
+## Objective
+
+- 识别原始需求中的模糊点、遗漏和潜在风险
+- 通过 CLI 辅助分析需求完整性，生成深度探测问题
+- 支持多轮交互讨论，逐步细化需求
+- 生成经用户确认的 `refined-requirements.json` 作为后续阶段的高质量输入
+
+## Input
+
+- Dependency: `{workDir}/spec-config.json` (Phase 1 output)
+- Optional: `{workDir}/discovery-context.json` (codebase context)
+
+## Execution Steps
+
+### Step 1: Load Phase 1 Context
+
+```javascript
+const specConfig = JSON.parse(Read(`${workDir}/spec-config.json`));
+const { seed_analysis, seed_input, focus_areas, has_codebase, depth } = specConfig;
+
+let discoveryContext = null;
+if (has_codebase) {
+  try {
+    discoveryContext = JSON.parse(Read(`${workDir}/discovery-context.json`));
+  } catch (e) { /* proceed without */ }
+}
+```
+
+### Step 2: CLI Gap Analysis & Question Generation
+
+调用 Gemini CLI 分析原始需求的完整性，识别模糊点并生成探测问题。
+
+```javascript
+Bash({
+  command: `ccw cli -p "PURPOSE: 深度分析用户的初始需求，识别模糊点、遗漏和需要澄清的领域。
+Success: 生成 3-5 个高质量的探测问题，覆盖功能范围、边界条件、非功能性需求、用户场景等维度。
+
+ORIGINAL SEED INPUT:
+${seed_input}
+
+SEED ANALYSIS:
+${JSON.stringify(seed_analysis, null, 2)}
+
+FOCUS AREAS: ${focus_areas.join(', ')}
+${discoveryContext ? `
+CODEBASE CONTEXT:
+- Existing patterns: ${discoveryContext.existing_patterns?.slice(0,5).join(', ') || 'none'}
+- Tech stack: ${JSON.stringify(discoveryContext.tech_stack || {})}
+` : ''}
+
+TASK:
+1. 评估当前需求描述的完整性（1-10 分，列出缺失维度）
+2. 识别 3-5 个关键模糊区域，每个区域包含：
+   - 模糊点描述（为什么不清楚）
+   - 1-2 个开放式探测问题
+   - 1-2 个扩展建议（基于领域最佳实践）
+3. 检查以下维度是否有遗漏：
+   - 功能范围边界（什么在范围内/外？）
+   - 核心用户场景和流程
+   - 非功能性需求（性能、安全、可用性、可扩展性）
+   - 集成点和外部依赖
+   - 数据模型和存储需求
+   - 错误处理和异常场景
+4. 基于领域经验提供需求扩展建议
+
+MODE: analysis
+EXPECTED: JSON output:
+{
+  \"completeness_score\": 7,
+  \"missing_dimensions\": [\"Performance requirements\", \"Error handling\"],
+  \"clarification_areas\": [
+    {
+      \"area\": \"Scope boundary\",
+      \"rationale\": \"Input does not clarify...\",
+      \"questions\": [\"Question 1?\", \"Question 2?\"],
+      \"suggestions\": [\"Suggestion 1\", \"Suggestion 2\"]
+    }
+  ],
+  \"expansion_recommendations\": [
+    {
+      \"category\": \"Non-functional\",
+      \"recommendation\": \"Consider adding...\",
+      \"priority\": \"high|medium|low\"
+    }
+  ]
+}
+CONSTRAINTS: 问题必须是开放式的，建议必须具体可执行，使用用户输入的语言
+" --tool gemini --mode analysis`,
+  run_in_background: true
+});
+// Wait for CLI result before continuing
+```
+
+解析 CLI 输出为结构化数据：
+```javascript
+const gapAnalysis = {
+  completeness_score: 0,
+  missing_dimensions: [],
+  clarification_areas: [],
+  expansion_recommendations: []
+};
+// Parse from CLI output
+```
+
+### Step 3: Interactive Discussion Loop
+
+核心多轮交互循环。每轮：展示分析结果 → 用户回应 → 更新需求状态 → 判断是否继续。
+
+```javascript
+// Initialize requirement state
+let requirementState = {
+  problem_statement: seed_analysis.problem_statement,
+  target_users: seed_analysis.target_users,
+  domain: seed_analysis.domain,
+  constraints: seed_analysis.constraints,
+  confirmed_features: [],
+  non_functional_requirements: [],
+  boundary_conditions: [],
+  integration_points: [],
+  key_assumptions: [],
+  discussion_rounds: 0
+};
+
+let discussionLog = [];
+let userSatisfied = false;
+
+// === Round 1: Present gap analysis results ===
+// Display completeness_score, clarification_areas, expansion_recommendations
+// Then ask user to respond
+
+while (!userSatisfied && requirementState.discussion_rounds < 5) {
+  requirementState.discussion_rounds++;
+
+  if (requirementState.discussion_rounds === 1) {
+    // --- First round: present initial gap analysis ---
+    // Format questions and suggestions from gapAnalysis for display
+    // Present as a structured summary to the user
+
+    AskUserQuestion({
+      questions: [
+        {
+          question: buildDiscussionPrompt(gapAnalysis, requirementState),
+          header: "Req Expand",
+          multiSelect: false,
+          options: [
+            { label: "I'll answer", description: "I have answers/feedback to provide (type in 'Other')" },
+            { label: "Accept all suggestions", description: "Accept all expansion recommendations as-is" },
+            { label: "Skip to generation", description: "Requirements are clear enough, proceed directly" }
+          ]
+        }
+      ]
+    });
+  } else {
+    // --- Subsequent rounds: refine based on user feedback ---
+    // Call CLI with accumulated context for follow-up analysis
+    Bash({
+      command: `ccw cli -p "PURPOSE: 基于用户最新回应，更新需求理解，识别剩余模糊点。
+
+CURRENT REQUIREMENT STATE:
+${JSON.stringify(requirementState, null, 2)}
+
+DISCUSSION HISTORY:
+${JSON.stringify(discussionLog, null, 2)}
+
+USER'S LATEST RESPONSE:
+${lastUserResponse}
+
+TASK:
+1. 将用户回应整合到需求状态中
+2. 识别 1-3 个仍需澄清或可扩展的领域
+3. 生成后续问题（如有必要）
+4. 如果需求已充分，输出最终需求摘要
+
+MODE: analysis
+EXPECTED: JSON output:
+{
+  \"updated_fields\": { /* fields to merge into requirementState */ },
+  \"status\": \"need_more_discussion\" | \"ready_for_confirmation\",
+  \"follow_up\": {
+    \"remaining_areas\": [{\"area\": \"...\", \"questions\": [\"...\"]}],
+    \"summary\": \"...\"
+  }
+}
+CONSTRAINTS: 避免重复已回答的问题，聚焦未覆盖的领域
+" --tool gemini --mode analysis`,
+      run_in_background: true
+    });
+    // Wait for CLI result, parse and continue
+
+    // If status === "ready_for_confirmation", break to confirmation step
+    // If status === "need_more_discussion", present follow-up questions
+
+    AskUserQuestion({
+      questions: [
+        {
+          question: buildFollowUpPrompt(followUpAnalysis, requirementState),
+          header: "Follow-up",
+          multiSelect: false,
+          options: [
+            { label: "I'll answer", description: "I have more feedback (type in 'Other')" },
+            { label: "Looks good", description: "Requirements are sufficiently clear now" },
+            { label: "Accept suggestions", description: "Accept remaining suggestions" }
+          ]
+        }
+      ]
+    });
+  }
+
+  // Process user response
+  // - "Skip to generation" / "Looks good" → userSatisfied = true
+  // - "Accept all suggestions" → merge suggestions into requirementState, userSatisfied = true
+  // - "I'll answer" (with Other text) → record in discussionLog, continue loop
+  // - User selects Other with custom text → parse and record
+
+  discussionLog.push({
+    round: requirementState.discussion_rounds,
+    agent_prompt: currentPrompt,
+    user_response: userResponse,
+    timestamp: new Date().toISOString()
+  });
+}
+```
+
+#### Helper: Build Discussion Prompt
+
+```javascript
+function buildDiscussionPrompt(gapAnalysis, state) {
+  let prompt = `## Requirement Analysis Results\n\n`;
+  prompt += `**Completeness Score**: ${gapAnalysis.completeness_score}/10\n`;
+
+  if (gapAnalysis.missing_dimensions.length > 0) {
+    prompt += `**Missing Dimensions**: ${gapAnalysis.missing_dimensions.join(', ')}\n\n`;
+  }
+
+  prompt += `### Key Questions\n\n`;
+  gapAnalysis.clarification_areas.forEach((area, i) => {
+    prompt += `**${i+1}. ${area.area}**\n`;
+    prompt += `  ${area.rationale}\n`;
+    area.questions.forEach(q => { prompt += `  - ${q}\n`; });
+    if (area.suggestions.length > 0) {
+      prompt += `  Suggestions: ${area.suggestions.join('; ')}\n`;
+    }
+    prompt += `\n`;
+  });
+
+  if (gapAnalysis.expansion_recommendations.length > 0) {
+    prompt += `### Expansion Recommendations\n\n`;
+    gapAnalysis.expansion_recommendations.forEach(rec => {
+      prompt += `- [${rec.priority}] **${rec.category}**: ${rec.recommendation}\n`;
+    });
+  }
+
+  prompt += `\nPlease answer the questions above, or choose an option below.`;
+  return prompt;
+}
+```
+
+### Step 4: Auto Mode Handling
+
+```javascript
+if (autoMode) {
+  // Skip interactive discussion
+  // CLI generates default requirement expansion based on seed_analysis
+  Bash({
+    command: `ccw cli -p "PURPOSE: 基于种子分析自动生成需求扩展，无需用户交互。
+
+SEED ANALYSIS:
+${JSON.stringify(seed_analysis, null, 2)}
+
+SEED INPUT: ${seed_input}
+DEPTH: ${depth}
+${discoveryContext ? `CODEBASE: ${JSON.stringify(discoveryContext.tech_stack || {})}` : ''}
+
+TASK:
+1. 基于领域最佳实践，自动扩展功能需求清单
+2. 推断合理的非功能性需求
+3. 识别明显的边界条件
+4. 列出关键假设
+
+MODE: analysis
+EXPECTED: JSON output matching refined-requirements.json schema
+CONSTRAINTS: 保守推断，只添加高置信度的扩展
+" --tool gemini --mode analysis`,
+    run_in_background: true
+  });
+  // Parse output directly into refined-requirements.json
+}
+```
+
+### Step 5: Generate Requirement Confirmation Summary
+
+在写入文件前，向用户展示最终的需求确认摘要（非 auto mode）。
+
+```javascript
+if (!autoMode) {
+  // Build confirmation summary from requirementState
+  const summary = buildConfirmationSummary(requirementState);
+
+  AskUserQuestion({
+    questions: [
+      {
+        question: `## Requirement Confirmation\n\n${summary}\n\nConfirm and proceed to specification generation?`,
+        header: "Confirm",
+        multiSelect: false,
+        options: [
+          { label: "Confirm & proceed", description: "Requirements confirmed, start spec generation" },
+          { label: "Need adjustments", description: "Go back and refine further" }
+        ]
+      }
+    ]
+  });
+
+  // If "Need adjustments" → loop back to Step 3
+  // If "Confirm & proceed" → continue to Step 6
+}
+```
+
+### Step 6: Write refined-requirements.json
+
+```javascript
+const refinedRequirements = {
+  session_id: specConfig.session_id,
+  phase: "1.5",
+  generated_at: new Date().toISOString(),
+  source: autoMode ? "auto-expansion" : "interactive-discussion",
+  discussion_rounds: requirementState.discussion_rounds,
+
+  // Core requirement content
+  clarified_problem_statement: requirementState.problem_statement,
+  confirmed_target_users: requirementState.target_users.map(u =>
+    typeof u === 'string' ? { name: u, needs: [], pain_points: [] } : u
+  ),
+  confirmed_domain: requirementState.domain,
+
+  confirmed_features: requirementState.confirmed_features.map(f => ({
+    name: f.name,
+    description: f.description,
+    acceptance_criteria: f.acceptance_criteria || [],
+    edge_cases: f.edge_cases || [],
+    priority: f.priority || "unset"
+  })),
+
+  non_functional_requirements: requirementState.non_functional_requirements.map(nfr => ({
+    type: nfr.type,    // Performance, Security, Usability, Scalability, etc.
+    details: nfr.details,
+    measurable_criteria: nfr.measurable_criteria || ""
+  })),
+
+  boundary_conditions: {
+    in_scope: requirementState.boundary_conditions.filter(b => b.scope === 'in'),
+    out_of_scope: requirementState.boundary_conditions.filter(b => b.scope === 'out'),
+    constraints: requirementState.constraints
+  },
+
+  integration_points: requirementState.integration_points,
+  key_assumptions: requirementState.key_assumptions,
+
+  // Traceability
+  discussion_log: autoMode ? [] : discussionLog
+};
+
+Write(`${workDir}/refined-requirements.json`, JSON.stringify(refinedRequirements, null, 2));
+```
+
+### Step 7: Update spec-config.json
+
+```javascript
+specConfig.refined_requirements_file = "refined-requirements.json";
+specConfig.phasesCompleted.push({
+  phase: 1.5,
+  name: "requirement-clarification",
+  output_file: "refined-requirements.json",
+  discussion_rounds: requirementState.discussion_rounds,
+  completed_at: new Date().toISOString()
+});
+
+Write(`${workDir}/spec-config.json`, JSON.stringify(specConfig, null, 2));
+```
+
+## Output
+
+- **File**: `refined-requirements.json`
+- **Format**: JSON
+- **Updated**: `spec-config.json` (added `refined_requirements_file` field and phase 1.5 to `phasesCompleted`)
+
+## Quality Checklist
+
+- [ ] Problem statement refined (>= 30 characters, more specific than seed)
+- [ ] At least 2 confirmed features with descriptions
+- [ ] At least 1 non-functional requirement identified
+- [ ] Boundary conditions defined (in-scope + out-of-scope)
+- [ ] Key assumptions listed (>= 1)
+- [ ] Discussion rounds recorded (>= 1 in interactive mode)
+- [ ] User explicitly confirmed requirements (non-auto mode)
+- [ ] `refined-requirements.json` written with valid JSON
+- [ ] `spec-config.json` updated with phase 1.5 completion
+
+## Next Phase
+
+Proceed to [Phase 2: Product Brief](02-product-brief.md). Phase 2 should load `refined-requirements.json` as primary input instead of relying solely on `spec-config.json.seed_analysis`.
--- a/.claude/skills/spec-generator/phases/02-product-brief.md
+++ b/.claude/skills/spec-generator/phases/02-product-brief.md
@@ -13,6 +13,7 @@ Generate a product brief through multi-perspective CLI analysis, establishing "w
 ## Input

 - Dependency: `{workDir}/spec-config.json`
+- Primary: `{workDir}/refined-requirements.json` (Phase 1.5 output, preferred over raw seed_analysis)
 - Optional: `{workDir}/discovery-context.json`
 - Config: `{workDir}/spec-config.json`
 - Template: `templates/product-brief.md`
@@ -25,6 +26,14 @@ Generate a product brief through multi-perspective CLI analysis, establishing "w
 const specConfig = JSON.parse(Read(`${workDir}/spec-config.json`));
 const { seed_analysis, seed_input, has_codebase, depth, focus_areas } = specConfig;

+// Load refined requirements (Phase 1.5 output) - preferred over raw seed_analysis
+let refinedReqs = null;
+try {
+  refinedReqs = JSON.parse(Read(`${workDir}/refined-requirements.json`));
+} catch (e) {
+  // No refined requirements, fall back to seed_analysis
+}
+
 let discoveryContext = null;
 if (has_codebase) {
  try {
@@ -35,13 +44,25 @@ if (has_codebase) {
 }

 // Build shared context string for CLI prompts
+// Prefer refined requirements over raw seed_analysis
+const problem = refinedReqs?.clarified_problem_statement || seed_analysis.problem_statement;
+const users = refinedReqs?.confirmed_target_users?.map(u => u.name || u).join(', ')
+  || seed_analysis.target_users.join(', ');
+const domain = refinedReqs?.confirmed_domain || seed_analysis.domain;
+const constraints = refinedReqs?.boundary_conditions?.constraints?.join(', ')
+  || seed_analysis.constraints.join(', ');
+const features = refinedReqs?.confirmed_features?.map(f => f.name).join(', ') || '';
+const nfrs = refinedReqs?.non_functional_requirements?.map(n => `${n.type}: ${n.details}`).join('; ') || '';
+
 const sharedContext = `
 SEED: ${seed_input}
-PROBLEM: ${seed_analysis.problem_statement}
-TARGET USERS: ${seed_analysis.target_users.join(', ')}
-DOMAIN: ${seed_analysis.domain}
-CONSTRAINTS: ${seed_analysis.constraints.join(', ')}
+PROBLEM: ${problem}
+TARGET USERS: ${users}
+DOMAIN: ${domain}
+CONSTRAINTS: ${constraints}
 FOCUS AREAS: ${focus_areas.join(', ')}
+${features ? `CONFIRMED FEATURES: ${features}` : ''}
+${nfrs ? `NON-FUNCTIONAL REQUIREMENTS: ${nfrs}` : ''}
 ${discoveryContext ? `
 CODEBASE CONTEXT:
 - Existing patterns: ${discoveryContext.existing_patterns?.slice(0,5).join(', ') || 'none'}
--- a/.claude/skills/spec-generator/specs/document-standards.md
+++ b/.claude/skills/spec-generator/specs/document-standards.md
@@ -81,6 +81,7 @@ Examples:
 |------|-------|-------------|
 | `spec-config.json` | 1 | Session configuration and state |
 | `discovery-context.json` | 1 | Codebase exploration results (optional) |
+| `refined-requirements.json` | 1.5 | Confirmed requirements after discussion |
 | `product-brief.md` | 2 | Product brief document |
 | `requirements.md` | 3 | PRD document |
 | `architecture.md` | 4 | Architecture decisions document |
@@ -168,6 +169,7 @@ Derived from [REQ-001](requirements.md#req-001).
    "dimensions": ["string array - 3-5 exploration dimensions"]
  },
  "has_codebase": "boolean",
+  "refined_requirements_file": "string (optional) - path to refined-requirements.json",
  "phasesCompleted": [
    {
      "phase": "number (1-6)",
@@ -181,6 +183,60 @@ Derived from [REQ-001](requirements.md#req-001).

 ---

+## refined-requirements.json Schema
+
+```json
+{
+  "session_id": "string (required) - matches spec-config.json",
+  "phase": "1.5",
+  "generated_at": "ISO8601 (required)",
+  "source": "interactive-discussion|auto-expansion (required)",
+  "discussion_rounds": "number (required) - 0 for auto mode",
+  "clarified_problem_statement": "string (required) - refined problem statement",
+  "confirmed_target_users": [
+    {
+      "name": "string",
+      "needs": ["string array"],
+      "pain_points": ["string array"]
+    }
+  ],
+  "confirmed_domain": "string",
+  "confirmed_features": [
+    {
+      "name": "string",
+      "description": "string",
+      "acceptance_criteria": ["string array"],
+      "edge_cases": ["string array"],
+      "priority": "must|should|could|unset"
+    }
+  ],
+  "non_functional_requirements": [
+    {
+      "type": "Performance|Security|Usability|Scalability|Reliability|...",
+      "details": "string",
+      "measurable_criteria": "string (optional)"
+    }
+  ],
+  "boundary_conditions": {
+    "in_scope": ["string array"],
+    "out_of_scope": ["string array"],
+    "constraints": ["string array"]
+  },
+  "integration_points": ["string array"],
+  "key_assumptions": ["string array"],
+  "discussion_log": [
+    {
+      "round": "number",
+      "agent_prompt": "string",
+      "user_response": "string",
+      "timestamp": "ISO8601"
+    }
+  ]
+}
+```
+
+---
+
 ## Validation Checklist

 - [ ] Every document starts with valid YAML frontmatter
--- a/.claude/skills/spec-generator/specs/quality-gates.md
+++ b/.claude/skills/spec-generator/specs/quality-gates.md
@@ -88,6 +88,18 @@ Content provides sufficient detail for execution teams.
 | Dimensions generated | 3-5 exploration dimensions | Warning |
 | Constraints listed | >= 0 (can be empty with justification) | Info |

+### Phase 1.5: Requirement Expansion & Clarification
+
+| Check | Criteria | Severity |
+|-------|----------|----------|
+| Problem statement refined | More specific than seed, >= 30 characters | Error |
+| Confirmed features | >= 2 features with descriptions | Error |
+| Non-functional requirements | >= 1 identified (performance, security, etc.) | Warning |
+| Boundary conditions | In-scope and out-of-scope defined | Warning |
+| Key assumptions | >= 1 assumption listed | Warning |
+| User confirmation | Explicit user confirmation recorded (non-auto mode) | Info |
+| Discussion rounds | >= 1 round of interaction (non-auto mode) | Info |
+
 ### Phase 2: Product Brief

 | Check | Criteria | Severity |