v1.14.0 — add Step 3b review workflow, unify file naming, resilient code references

- Add /plan2code-3b-review: 5-step post-implementation review with adaptive
  scope, 11 dimensions, reference-file architecture, and Plan/Apply/Verify fixes
- Unify workflow/skill file naming to single-dash (drop -- and --- conventions)
- Add Devin platform support and CLAUDE.md MANDATORY FIRST STEP template
- Guide agents to use semantic anchors over line numbers in workflow prompts
- Bump version to 1.14.0

.agents-docs/AGENTS-code-style.md

@@ -16,3 +16,4 @@
 - **Workflow file character limit:** All `src/plan2code-*.md` files must be ≤ 11,000 characters. A husky pre-commit hook enforces this. The 11,000 limit leaves buffer for platform-specific YAML headers (106-142 chars) to stay under Windsurf's 12,000 char limit.
 - **Metrics internal prompts have no char limit:** Files in `plan2code-metrics/src/prompts/` are NOT subject to the 11,000 char limit — only `src/plan2code-*.md` consumer-facing prompts are.
 - **User Feedback table format:** The `## User Feedback` markdown table in `overview.md` has a strict format the collector regex depends on. Field names must be exactly `Rating`, `Reason`, `Went Well`, `Went Poorly`. Pipe characters in values must be escaped as `\|`.
+- **Reference file sizing guideline:** Files in `src/plan2code-*-references/` directories target ~100-200 lines each (soft guideline; evaluate splitting above 300). They are NOT subject to the 11,000 character limit. The pre-commit hook (`validate-char-count.js`) only checks `src/plan2code-*.md` flat files — subdirectory contents are automatically excluded.