fix(05): revise plan 05-02 based on checker feedback

- Reframe must_haves truths to outcome-focused (scalability, UX)
- Add instruction to fix outdated slug documentation (-- to -)
- Add slug verification to task verify checklist

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.planning/phases/05-subagent-codebase-analysis/05-02-PLAN.md

@@ -10,10 +10,10 @@ autonomous: false
 
 must_haves:
   truths:
-    - "analyze-codebase Step 9 spawns gsd-entity-generator subagent"
-    - "Subagent receives file list (paths only, not contents)"
-    - "Orchestrator context is preserved (no file contents loaded)"
-    - "Entity generation completes and returns statistics"
+    - "Entity generation scales to 500+ files without context exhaustion"
+    - "Subagent receives only file paths, preserving orchestrator context"
+    - "Entity files appear in .planning/intel/entities/ after generation"
+    - "User can run /gsd:analyze-codebase on large codebases without degradation"
   artifacts:
     - path: "commands/gsd/analyze-codebase.md"
       provides: "Refactored command with subagent delegation"
@@ -164,6 +164,17 @@ Next: Intel hooks will continue incremental updates as you code.
 - This preserves orchestrator context for large codebases (500+ files)
 ```
 
+**Fix outdated slug documentation** (around line 286):
+The entity filename convention example is outdated. Change:
+```markdown
+- Example: src/utils/auth.js -> src--utils--auth-js.md
+```
+To:
+```markdown
+- Example: src/utils/auth.js -> src-utils-auth-js.md
+```
+(Single hyphen, not double hyphen. The hook `gsd-intel-index.js:generateSlug` already uses single hyphen format.)
+
 **Important:** Do NOT pass file contents to subagent. Pass file PATHS only. Subagent reads files itself (fresh context).
   </action>
   <verify>
@@ -173,9 +184,10 @@ Read updated commands/gsd/analyze-codebase.md and confirm:
 - File paths passed, not file contents
 - Context section mentions subagent delegation
 - Steps 9.4-9.5 updated for new flow
+- Slug example at line ~286 uses single hyphen (src-utils-auth-js.md)
   </verify>
   <done>
-analyze-codebase.md Step 9 refactored. Entity generation now delegates to gsd-entity-generator subagent instead of inline Task batching.
+analyze-codebase.md Step 9 refactored. Entity generation now delegates to gsd-entity-generator subagent instead of inline Task batching. Outdated slug documentation corrected.
   </done>
 </task>
 
@@ -204,6 +216,7 @@ analyze-codebase.md Step 9 refactored. Entity generation now delegates to gsd-en
 - [ ] File paths passed to subagent (not file contents)
 - [ ] No batch-of-10 pattern in command
 - [ ] Context section documents subagent model
+- [ ] Slug example uses single hyphen format (matches hook)
 - [ ] Entity files created in test project
 - [ ] Entities follow template format
 - [ ] Graph database updated (via hook)