feat: integrate saas-metrics-coach, add finance commands, remove seek-and-analyze-video

- Integrate saas-metrics-coach into cs-financial-analyst agent with SaaS health
  and unit economics workflows
- Add /financial-health and /saas-health slash commands
- Add /update-docs repo command for post-creation sync pipeline
- Remove seek-and-analyze-video skill (requires paid external API)
- Update all documentation (CLAUDE.md, README.md, docs site, marketplace)
- Sync Codex CLI (150 skills), Gemini CLI (207 items), fix count consistency
- Regenerate 206 MkDocs pages, fix docs/index.md meta 170→171,
  getting-started.md finance bundle 1→2

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

.github/pull_request_template.md

@@ -1,60 +1,24 @@
 ## Summary
-<!-- Brief description of what this PR accomplishes -->
 
+<!-- What does this PR add or change? -->
 
-## Context
-<!-- Why these changes are needed. Link to issues, discussions, or explain the problem being solved. -->
+## Checklist
 
--
+- [ ] **Target branch is `dev`** (not `main` — PRs to main will be auto-closed)
+- [ ] Skill has `SKILL.md` with valid YAML frontmatter (`name`, `description`, `license`)
+- [ ] Scripts (if any) run with `--help` without errors
+- [ ] No hardcoded API keys, tokens, or secrets
+- [ ] No vendor-locked dependencies without open-source fallback
+- [ ] Follows existing directory structure (`domain/skill-name/SKILL.md`)
 
-## Changes
-<!-- High-level overview of what was modified -->
+## Type of Change
 
--
+- [ ] New skill
+- [ ] Improvement to existing skill
+- [ ] Bug fix
+- [ ] Documentation
+- [ ] Infrastructure / CI
 
 ## Testing
-<!-- Confirm all checks have passed -->
 
-- [ ] Local quality checks passed (Python syntax, markdown links)
-- [ ] All Python scripts tested and working
-- [ ] Skills validated with Claude (if applicable)
-- [ ] `ci-quality-gate` workflow will pass
-- [ ] Manual testing completed
-
-**Testing Details**:
-<!-- Describe what you tested and how -->
-
-
-## Security
-<!-- Confirm security requirements met -->
-
-- [ ] No secrets, credentials, or API keys committed
-- [ ] No destructive commands in generated outputs
-- [ ] Path traversal vulnerabilities checked
-- [ ] Dependencies reviewed (if added)
-
-## Documentation
-<!-- Confirm documentation updated -->
-
-- [ ] README.md updated (if applicable)
-- [ ] CLAUDE.md updated (if applicable)
-- [ ] Inline code comments added for complex logic
-- [ ] CHANGELOG.md updated (if applicable)
-- [ ] Skill SKILL.md files updated (if applicable)
-
-## Reviewers
-<!-- Tag reviewers who should look at this PR -->
-
-- [ ] @
-
-## Related Issues
-<!-- Link issues this PR addresses using keywords: Fixes, Closes, Resolves, Related to -->
-
-Fixes #
-Closes #
-Related to #
-
----
-
-**Type**: <!-- feat | fix | docs | refactor | chore | ci | test | perf | skill -->
-**Scope**: <!-- component affected (e.g., marketing-skill, workflows, agents, templates) -->
+<!-- How did you verify this works? -->