fix(skills): address coderabbitai + cubic-dev-ai review findings

- marketplace.json: update skill count 261 → 265
- 90_SYNTHESIS.md (both copies): add required ## Raw / ## Synthesis
  wrappers per module contract; add Aaker brand system section (4b)
  covering archetype, identity, associations, equity (Module 40 output)
- brand-discovery/SKILL.md: add terminal module handling for 90_SYNTHESIS
  (nextModule=null, completedModules includes 90); add path traversal
  validation rules for participant, moduleFile, outputPath in multi-founder
  mode
- competitive-platform-analysis/SKILL.md (both copies): fix malformed
  markdown emphasis (stray * after "substitutes:")
- competitive-report-structure/SKILL.md (both copies): clarify heatmap
  column for dimension 9 — two poles (Memorability + Hireability) must be
  represented as separate sub-columns, not averaged
- 40_personality-archetype.md (both copies): join split heading onto one line
- 60_narrative-story.md, 70_founder-tension.md (both copies): add trailing
  newline at EOF

Duplicate .agents/ ↔ skills/ copies are intentional (Codex mirror);
.agents/ strips `origin: community` per Codex allowlist.

.claude-plugin/marketplace.json

@@ -11,7 +11,7 @@
     {
       "name": "ecc",
       "source": "./",
-      "description": "Harness-native ECC operator layer - 64 agents, 262 skills, 84 legacy command shims, reusable hooks, rules, selective install profiles, and production-ready workflows for Claude Code, Codex, OpenCode, Cursor, and related agent harnesses",
+      "description": "Harness-native ECC operator layer - 64 agents, 269 skills, 84 legacy command shims, reusable hooks, rules, selective install profiles, and production-ready workflows for Claude Code, Codex, OpenCode, Cursor, and related agent harnesses",
       "version": "2.0.0",
       "author": {
         "name": "Affaan Mustafa",