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/marketing-ideas/evals/evals.json

@@ -4,9 +4,9 @@
     {
       "id": 1,
       "prompt": "I need marketing ideas for my SaaS product. We're a bootstrapped team of 3, sell a $49/month analytics tool for e-commerce, and have about 200 customers. Budget is tight — maybe $500/month for marketing.",
-      "expected_output": "Should check for product-marketing-context.md first. Should filter ideas by low budget and early-stage constraints. Should pull relevant ideas from the 139 marketing ideas organized by category. Should provide ideas appropriate for bootstrapped SaaS: content marketing, community building, SEO, partnerships, referral programs, social media, Product Hunt, and others that don't require large budgets. Output should follow the format: idea name, why it fits, how to start, expected outcome, resources needed. Should prioritize by likely impact given their stage.",
+      "expected_output": "Should check for product-marketing.md first. Should filter ideas by low budget and early-stage constraints. Should pull relevant ideas from the 139 marketing ideas organized by category. Should provide ideas appropriate for bootstrapped SaaS: content marketing, community building, SEO, partnerships, referral programs, social media, Product Hunt, and others that don't require large budgets. Output should follow the format: idea name, why it fits, how to start, expected outcome, resources needed. Should prioritize by likely impact given their stage.",
       "assertions": [
-        "Checks for product-marketing-context.md",
+        "Checks for product-marketing.md",
         "Filters ideas by low budget constraint",
         "Provides ideas from the 139 marketing ideas catalog",
         "Ideas are appropriate for bootstrapped SaaS stage",
@@ -77,10 +77,10 @@
     {
       "id": 6,
       "prompt": "We want to set up a referral program. How should we structure it?",
-      "expected_output": "Should recognize this is specifically a referral program design request. Should defer to or cross-reference the referral-program skill, which provides detailed guidance on referral loop design, incentive structures, implementation, and optimization. May briefly mention referral programs as a marketing idea but should make clear that referral-program is the right skill for detailed program design.",
+      "expected_output": "Should recognize this is specifically a referral program design request. Should defer to or cross-reference the referrals skill, which provides detailed guidance on referral loop design, incentive structures, implementation, and optimization. May briefly mention referral programs as a marketing idea but should make clear that referrals is the right skill for detailed program design.",
       "assertions": [
         "Recognizes this as a referral program design request",
-        "References or defers to referral-program skill",
+        "References or defers to referrals skill",
         "Does not attempt detailed referral program design",
         "May briefly mention as a marketing idea"
       ],