feat: Simplify agent architecture with test-fix workflow (v3.2.0)

Major architectural improvements:
- Simplify from 3 agents to 2 core agents
- Adopt "Tests Are the Review" philosophy
- Enhance test-gen as 4-phase orchestrator
- Simplify review.md following update-memory pattern

Agent Changes:
- NEW: @test-fix-agent - Execute tests, diagnose failures, fix code
- ENHANCED: @code-developer - Now writes implementation + tests together
- REMOVED: @code-review-agent, @code-review-test-agent

Task Type Updates:
- "test" → "test-gen" (generate tests)
- NEW: "test-fix" (execute and fix tests)

Workflow Improvements:
- test-gen.md: 4-phase orchestrator (context-gather → concept-enhanced → task-generate → execute)
- review.md: Simplified to optional specialized reviews (security, architecture, quality, action-items)
- All 16 files updated with new agent references

See CHANGELOG.md for full details.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

.claude/commands/workflow/tools/task-generate-agent.md

@@ -158,7 +158,7 @@ Task(
   "status": "pending",
   "meta": {
     "type": "feature|bugfix|refactor|test|docs",
-    "agent": "@code-developer|@code-review-test-agent"
+    "agent": "@code-developer|@test-fix-agent|@general-purpose"
   },
   "context": {
     "requirements": ["extracted from analysis"],

.claude/commands/workflow/tools/task-generate.md

@@ -67,8 +67,8 @@ Generate task JSON files and IMPL_PLAN.md from analysis results with automatic a
   "title": "Descriptive task name",
   "status": "pending|active|completed|blocked|container",
   "meta": {
-    "type": "feature|bugfix|refactor|test|docs",
-    "agent": "@code-developer|@planning-agent|@code-review-test-agent"
+    "type": "feature|bugfix|refactor|test-gen|test-fix|docs",
+    "agent": "@code-developer|@test-fix-agent|@general-purpose"
   },
   "context": {
     "requirements": ["Clear requirement from analysis"],