feat: v2.0 skill renames and CRO consolidation (#291)

* feat: v2.0 skill renames and CRO consolidation

BREAKING CHANGE: Users must reinstall skills after this update.

## Skill Renames (16)
- ab-test-setup → ab-testing
- analytics-tracking → analytics
- aso-audit → aso
- competitor-alternatives → competitors
- email-sequence → emails
- free-tool-strategy → free-tools
- launch-strategy → launch
- onboarding-cro → onboarding
- paywall-upgrade-cro → paywalls
- popup-cro → popups
- pricing-strategy → pricing
- product-marketing-context → product-marketing
- referral-program → referrals
- schema-markup → schema
- signup-flow-cro → signup
- social-content → social

## Consolidations (1)
- page-cro + form-cro → cro (form content in references/form.md)

## Why 2.0?
- Shorter, cleaner skill names
- Consistent naming (no -strategy, -setup, -cro suffixes)
- All cross-references updated across 100+ files

Total skills: 40

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

* fix(v2.0): update evals for renamed skills, fix validate script, clear warnings

- Update 32 evals.json files to reference new skill names (page-cro → cro,
  product-marketing-context → product-marketing, etc.) — these were missed
  in the initial v2.0 rename pass since only SKILL.md and marketplace.json
  were updated.
- Fix validate-skills.sh: replace GNU-only `head -n -1` with portable awk
  so frontmatter extraction works on macOS.
- Move Copy Editing Checklist (56 lines) to references/checklist.md to
  bring copy-editing SKILL.md under the 500-line limit (508 → 457).
- Add "see X" pointers to marketing-psychology description for skill
  discovery (cro, pricing, copywriting).
- Update skill-request.yml issue template placeholder (page-cro → cro).

All 40 skills now pass validation with zero warnings.

* fix(v2.0): add evals for 8 missing skills, strip stale frontmatter from cro/form.md

Adds 48 new eval cases (6 per skill) for skills that previously had no evals:
aso, co-marketing, community-marketing, competitor-profiling, directory-submissions,
image, lead-magnets, video. All 40 skills now have eval coverage (251 total cases).

Strips leftover frontmatter from skills/cro/references/form.md — it was inherited
from the old form-cro SKILL.md before consolidation. Reference files don't need
frontmatter.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* fix(v2.0): rename paid-ads → ads

One more v2.0 simplification — drops the redundant 'paid-' qualifier. Updates
the skill directory, SKILL.md frontmatter, evals.json, README skill table, the
v2.0 rename table in VERSIONS.md (now 17 renames), and all cross-references in
related skills (ad-creative, aso, competitor-profiling, customer-research,
lead-magnets, marketing-ideas) plus the tools/integrations guides.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* fix(v2.0): bump SKILL.md frontmatter version to 2.0.0 for all 40 skills

VERSIONS.md was already updated to 2.0.0 but the metadata.version field inside
each SKILL.md was still on 1.x. That mismatch would have caused the update-check
flow to perpetually report 'update available' since it compares VERSIONS.md
against local SKILL.md metadata versions.

Caught by codex review (P1).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* fix(v2.0): add legacy product-marketing-context.md filename fallback

Before this fix, users upgrading from v1.x who had a `product-marketing-context.md`
file would lose automatic context loading — every skill only checked the new
`product-marketing.md` filename. Now all 40 skills also accept the legacy
filename (in either `.agents/` or `.claude/`), and the README migration command
covers both legacy and current filenames.

Caught by codex review (P1 + P2).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* fix(v2.0): re-sort README skills table alphabetically, fix ads box width

The skills table had a few entries out of alphabetical order from the renames
(co-marketing was after cold-email, ads was at the renamed position).
Re-sorted alphabetically per sync-skills.js. Also padded the 'ads' cell in the
ASCII flow diagram to keep the box width consistent.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* fix(v2.0): document folder cleanup on upgrade, stop sync-skills from re-adding skills array

README upgrade guide now includes:
- A clear cleanup step for stale v1.x skill folders (renamed + consolidated) so
  users don't end up with both old and new folders side-by-side after upgrading
- The full v1 to v2 rename map for reference
- Existing product-marketing-context.md migration steps (preserved)

sync-skills.js no longer (re-)introduces a `skills` array on marketplace.json --
Claude Code's plugin schema discovers skills via the `skills/` directory, and the
explicit array was failing validation. The script now refreshes the description
count and strips the stale array if present.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

skills/free-tools/references/tool-types.md

@@ -0,0 +1,217 @@
+# Free Tool Types Reference
+
+Detailed guide to each type of marketing tool you can build.
+
+## Contents
+- Calculators
+- Generators
+- Analyzers/Auditors
+- Testers/Validators
+- Libraries/Resources
+- Interactive Educational
+- Tool Concept Examples by Industry (SaaS product, agency/services, e-commerce, developer tools, finance)
+
+## Calculators
+
+**Best for**: Decisions involving numbers, comparisons, estimates
+
+**Examples**:
+- ROI calculator
+- Savings calculator
+- Cost comparison tool
+- Salary calculator
+- Tax estimator
+- Pricing estimator
+- Compound interest calculator
+- Break-even calculator
+
+**Why they work**:
+- Personalized output
+- High perceived value
+- Share-worthy results
+- Clear problem → solution
+
+**Implementation tips**:
+- Keep inputs simple
+- Show calculations transparently
+- Make results shareable
+- Add "powered by" branding
+
+---
+
+## Generators
+
+**Best for**: Creating something useful quickly
+
+**Examples**:
+- Policy generator (privacy, terms)
+- Template generator
+- Name/tagline generator
+- Email subject line generator
+- Resume builder
+- Color palette generator
+- Logo maker
+- Contract generator
+
+**Why they work**:
+- Tangible output
+- Saves time
+- Easily shared
+- Repeat usage
+
+**Implementation tips**:
+- Output should be immediately usable
+- Allow customization
+- Offer download/export options
+- Include email gating for premium outputs
+
+---
+
+## Analyzers/Auditors
+
+**Best for**: Evaluating existing work or assets
+
+**Examples**:
+- Website grader
+- SEO analyzer
+- Email subject tester
+- Headline analyzer
+- Security checker
+- Performance auditor
+- Accessibility checker
+- Code quality analyzer
+
+**Why they work**:
+- Curiosity-driven
+- Personalized insights
+- Creates awareness of problems
+- Natural lead to solution
+
+**Implementation tips**:
+- Score or grade for gamification
+- Benchmark against averages
+- Provide actionable recommendations
+- Follow up with improvement offers
+
+---
+
+## Testers/Validators
+
+**Best for**: Checking if something works
+
+**Examples**:
+- Meta tag preview
+- Email rendering test
+- Mobile-friendly test
+- Speed test
+- DNS checker
+- SSL certificate checker
+- Redirect checker
+- Broken link finder
+
+**Why they work**:
+- Immediate utility
+- Bookmark-worthy
+- Repeat usage
+- Professional necessity
+
+**Implementation tips**:
+- Fast results are essential
+- Show pass/fail clearly
+- Provide fix instructions
+- Integrate with your product where relevant
+
+---
+
+## Libraries/Resources
+
+**Best for**: Reference material
+
+**Examples**:
+- Icon library
+- Template library
+- Code snippet library
+- Example gallery
+- Industry directory
+- Resource list
+- Swipe file collection
+- Font pairing tool
+
+**Why they work**:
+- High SEO value
+- Ongoing traffic
+- Establishes authority
+- Linkable asset
+
+**Implementation tips**:
+- Make searchable/filterable
+- Allow easy copying/downloading
+- Update regularly
+- Accept community submissions
+
+---
+
+## Interactive Educational
+
+**Best for**: Learning/understanding
+
+**Examples**:
+- Interactive tutorials
+- Code playgrounds
+- Visual explainers
+- Quizzes/assessments
+- Simulators
+- Comparison tools
+- Decision trees
+- Configurators
+
+**Why they work**:
+- Engages deeply
+- Demonstrates expertise
+- Shareable
+- Memory-creating
+
+**Implementation tips**:
+- Make it hands-on
+- Show immediate feedback
+- Lead to deeper resources
+- Capture engaged users
+
+---
+
+## Tool Concept Examples by Industry
+
+### SaaS Product
+- Product ROI calculator
+- Competitor comparison tool
+- Readiness assessment quiz
+- Template library for use case
+- Feature configurator
+
+### Agency/Services
+- Industry benchmark tool
+- Project scoping calculator
+- Portfolio review tool
+- Cost estimator
+- Proposal generator
+
+### E-commerce
+- Product finder quiz
+- Comparison tool
+- Size/fit calculator
+- Savings calculator
+- Gift finder
+
+### Developer Tools
+- Code snippet library
+- Testing/preview tool
+- Documentation generator
+- Interactive tutorials
+- API playground
+
+### Finance
+- Financial calculators
+- Investment comparison
+- Budget planner
+- Tax estimator
+- Loan calculator