feat(seo): add 10 SEO skills — local, international, technical, commerce, off-page (v0.25.7)

[teamdolly506-dev]

Summary

Adds 10 new SEO skills that fill gaps in the current suite — local, international, technical, commerce, and off-page — bumping the plugin to v0.25.7.

Skill	Area
local-seo	Local pack / Google Business Profile, NAP, LocalBusiness schema
hreflang-international	Hreflang correctness + international URL structure
sitemap-audit	XML sitemap discovery + URL reality cross-check
image-seo	Alt text, WebP/AVIF, CLS, image sitemaps, ImageObject
ecommerce-seo	PLP/PDP, faceted-nav crawl traps, Product/Offer schema
programmatic-seo	Templated pages at scale + doorway-page guardrails
competitor-pages	SERP gap analysis vs. top-ranking URLs
sxo	Search Experience Optimization (SERP click + post-click)
seo-drift	Baseline + regression monitoring
backlink-audit	Off-page audit (free GSC Links report by default)

Conventions

All native skills built to repo conventions: SKILL.md frontmatter triggers, seo/shared/preamble.md integration. Registered in AGENTS.md, .claude-plugin/plugin.json, .claude-plugin/marketplace.json, README.md, and CHANGELOG.md; version bumped to 0.25.7 in lockstep.

Scope discipline

Skills that would duplicate existing ones were intentionally omitted to avoid skill-routing collisions (e.g. seo-audit→seo-analysis, seo-content→content-writer, seo-schema→schema-markup-generator, seo-geo→geo-optimizer). Pure paid-data MCP wiring was skipped in favor of backlink-audit consuming such data when present.

Testing

• ✅ JSON validated; all 28 skill paths resolve to a SKILL.md.
• ✅ local-seo test-driven end-to-end on a live site (ระบบคิว.com): it crawled the HTML, parsed multiple JSON-LD blocks, and surfaced real issues — no LocalBusiness node, NAP/geo fragmented across unlinked schema nodes, one malformed phone format. (Did not false-positive on a postal code after verification.)
• ⚠️ The other 9 skills are prompt-only and have not yet been run end-to-end — review accordingly.

Known follow-up

local-seo should gain an explicit Step 0 prompt for place_id / GBP field paste (the GBP-completeness + reviews pillars need it), and the multi-block JSON-LD @id linkage check should be promoted to a named core check (that is what surfaced the real finding above). Happy to fold in if preferred before merge.

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🤖 Generated with Claude Code

[ununununium]

Merged — thank you for a genuinely well-built contribution! All 10 skills follow the repo conventions (frontmatter triggers, shared/preamble.md integration, cross-references to avoid routing collisions), and the registration across AGENTS.md / plugin.json / marketplace.json / README was complete. The anti-fabrication guardrails (aggregateRating only with real reviews, honest data-limit disclosure in backlink-audit) are exactly the bar we hold.

Two adjustments landed in a follow-up commit (5584e52):

• Version renumbered to 0.25.8 — main had already released 0.25.7 (a docs update) while this PR was open, so VERSION / plugin.json / marketplace.json / CHANGELOG moved up one patch.
• Credit lines reworded — "original to Toprank/NotFair" → "original to NotFair"; the prior brand name is banned from new code and docs repo-wide (see CLAUDE.md), the claude-seo MIT attribution stays. Plus a tiny typo fix in sxo ("bleaks" → "bleeds").

The 10 skills ship in v0.25.8 via notfair:upgrade. The follow-up you offered (local-seo Step 0 for place_id/GBP paste, promoting the multi-block JSON-LD @id linkage check to a named core check) would be a welcome next PR.