refactor: consolidate intent.yaml into intent.md frontmatter

Testing config (unit_tests, integration_tests, coverage_threshold, e2e_tests)
now lives in intent.md frontmatter alongside workflow, mode, and git strategy.
Eliminates the redundant intent.yaml file.

Updated consumers: subagent-context.sh, reviewer hat, elaborate skill.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: jwaldrip

hats/reviewer.md

@@ -32,7 +32,7 @@ The Reviewer verifies that the Builder's implementation satisfies the Unit's Com
 ## Steps
 
 1. Check testing requirements
-   - Read testing requirements from `.ai-dlc/{intent-slug}/intent.yaml`
+   - Read testing requirements from `.ai-dlc/{intent-slug}/intent.md` frontmatter
    - If testing requirements are configured, verify each:
      - **Unit tests**: If `unit_tests: true`, verify unit tests exist for new/modified code
      - **Integration tests**: If `integration_tests: true`, verify integration tests exist
@@ -76,7 +76,7 @@ The Reviewer verifies that the Builder's implementation satisfies the Unit's Com
 
 ## Success Criteria
 
-- [ ] Testing requirements checked (if configured in intent.yaml)
+- [ ] Testing requirements checked (if configured in intent.md)
 - [ ] All Completion Criteria verified (pass/fail for each)
 - [ ] Code quality issues documented
 - [ ] Edge cases and error handling reviewed
@@ -86,14 +86,14 @@ The Reviewer verifies that the Builder's implementation satisfies the Unit's Com
 
 ## Testing Verification Details
 
-When verifying testing requirements from `intent.yaml`:
+When verifying testing requirements from `intent.md`:
 
 ### Reading the Configuration
 
 ```bash
 INTENT_SLUG=$(han keep load --branch main intent-slug --quiet 2>/dev/null || echo "")
 INTENT_DIR=".ai-dlc/${INTENT_SLUG}"
-TESTING_CONFIG=$(han parse yaml testing --json < "$INTENT_DIR/intent.yaml" 2>/dev/null || echo "{}")
+TESTING_CONFIG=$(han parse yaml testing --json < "$INTENT_DIR/intent.md" 2>/dev/null || echo "{}")
 ```
 
 ### Unit Tests (when `unit_tests: true`)

hooks/subagent-context.sh

@@ -110,9 +110,9 @@ if [ -n "$PLAN" ]; then
   echo ""
 fi
 
-# Display testing requirements if configured
-if [ -f "$INTENT_DIR/intent.yaml" ]; then
-  TESTING_JSON=$(han parse yaml testing --json < "$INTENT_DIR/intent.yaml" 2>/dev/null || echo "")
+# Display testing requirements if configured (stored in intent.md frontmatter)
+if [ -f "$INTENT_FILE" ]; then
+  TESTING_JSON=$(han parse yaml testing --json < "$INTENT_FILE" 2>/dev/null || echo "")
   if [ -n "$TESTING_JSON" ] && [ "$TESTING_JSON" != "null" ] && [ "$TESTING_JSON" != "{}" ]; then
     echo "### Testing Requirements"
     echo ""

skills/elaborate/SKILL.md

@@ -618,6 +618,11 @@ git:
   change_strategy: {unit|intent|trunk|bolt}
   auto_merge: {true|false}
   auto_squash: false
+testing:
+  unit_tests: true          # true = required, false = optional
+  integration_tests: false  # true = required, false = optional
+  coverage_threshold: 80    # percentage (0-100), or null for no requirement
+  e2e_tests: false          # true = required, false = optional
 created: {ISO date}
 status: active
 ---
@@ -658,27 +663,16 @@ problem space.}
 {Relevant background, constraints, decisions made during elaboration}
 ```
 
-### 3. Write `intent.yaml` (testing configuration):
-```yaml
-# Testing requirements configured during elaboration
-# The reviewer hat enforces these requirements
-
-testing:
-  unit_tests: true          # true = required, false = optional
-  integration_tests: false  # true = required, false = optional
-  coverage_threshold: 80    # percentage (0-100), or null for no requirement
-  e2e_tests: false          # true = required, false = optional
-```
+**Testing frontmatter schema:**
 
-**Schema:**
 | Field | Type | Description |
 |-------|------|-------------|
 | `testing.unit_tests` | boolean | Whether unit tests are required for new code |
 | `testing.integration_tests` | boolean | Whether integration tests are required |
 | `testing.coverage_threshold` | number or null | Minimum coverage percentage, or null if no requirement |
 | `testing.e2e_tests` | boolean | Whether E2E tests must pass |
 
-### 4. Write `unit-NN-{slug}.md` for each unit:
+### 3. Write `unit-NN-{slug}.md` for each unit:
 ```markdown
 ---
 status: pending
@@ -726,7 +720,7 @@ misinterpret what to build.}
 - `documentation` → `do-technical-documentation` agents
 - `devops` → infrastructure/deployment agents
 
-### 5. Save iteration state to han keep:
+### 4. Save iteration state to han keep:
 
 Intent-level state is saved to the current branch (which is now the intent branch):
 
@@ -738,7 +732,7 @@ han keep save intent-slug "{intent-slug}"
 han keep save iteration.json '{"iteration":1,"hat":"{first-hat-after-elaborator}","workflowName":"{workflow}","mode":"{HITL|OHOTL|AHOTL}","workflow":["{hat1}","{hat2}"],"status":"active"}'
 ```
 
-### 6. Commit all artifacts on intent branch:
+### 5. Commit all artifacts on intent branch:
 
 ```bash
 git add .ai-dlc/
@@ -758,8 +752,7 @@ Intent Worktree: /tmp/ai-dlc-{intent-slug}/
 Branch: ai-dlc/{intent-slug}
 
 Created: .ai-dlc/{intent-slug}/
-- intent.md
-- intent.yaml (testing requirements)
+- intent.md (intent, config, and testing requirements)
 - unit-01-{name}.md
 - unit-02-{name}.md
 ...