docs: sync PRs #957-#979 to aeon docs

[aaronjmars]

Syncs merged PRs #957-#979 (watermark 956) into the aeon-repo docs. Source of truth = merged PRs on aeonfun/aeon. #958 skipped (prior run's own aeon-side sync).

Headline: seven -> ten harnesses (#967)

Cursor, Hermes, and GLM shipped as run-harnesses (#967) + dashboard auth rows (#975), taking Aeon to ten coding-agent CLIs. #967 updated the mechanism (harnesses.json, adapters, docs/harnesses.md, harness-adapter/README.md headline) but deliberately left the brand/headline surfaces at seven, the same pattern fx used. Promoted them to ten here.

Heads-up (binary asset): docs/assets/harnesses-aeon.jpg is a committed image still showing the old engine graphic. Its alt-text now reads ten, but the picture needs a manual re-render (same as the fx banner).

Surfaces changed

• .github/README.md - harness headline + hero/banner/doc-nav alt-text + inline list: seven -> ten, added Cursor/Hermes/GLM (skill total left at the 60+ floor)
• docs/assets/hero-animated.svg - "7 harnesses" -> "10 harnesses"
• docs/CAPABILITIES.md - "all seven harnesses" -> "all ten"
• llms.txt - six -> seven -> ten CLIs (line 3 + harnesses.md pointer), +Cursor/Hermes/GLM (docs: fix stale harness/MCP catalog counts (six->seven, four->every, +higgsfield) #960 had taken it to seven)
• docs/harnesses.md - fixed the broken #the-six-harnesses anchor (heading is now "The ten harnesses") + current-state staging/resolve counts to ten; dated "verified 2026-07-22" lines left untouched
• harness-adapter/README.md - sandbox-applies + adapter-count to ten; the verification list + "fx is the seventh adapter" left as add cursor hermes and glm harnesses #967's own follow-up
• Setup skill .claude/skills/aeon/** + plugin copy plugin/skills/aeon/** - catalog literal 76 -> 77 (SKILL.md footer + Steps stat, layout.md footer, mcp.md, skill-anatomy.md survey), Dev pack (11) -> (12). rightstack leads with ## Integration boundary and is read-only (no run log), so the lead-with-Steps and run-log numerators are unchanged - only the denominators moved. add rightstack web3 advisor #961 never touched the setup skill, so this was drift.
• catalog/skill-icons.json + regenerated docs/assets/skill-icons/rightstack.svg + apps/dashboard/lib/skill-icons.data.ts - rightstack had no glyph (add rightstack web3 advisor #961 skipped bin/generate-skill-icons, like taskmarket-delegate did). --check now passes 77/77.
• CHANGELOG.md - [Unreleased] Added/Changed/Fixed/Maintenance for the batch

Already at HEAD (no edit needed)

• .github/README.md full-catalog caption/anchor + docs/skill-packs.md Dev (12) / 77 - done by add rightstack web3 advisor #961
• docs/mcp-oauth.md Higgsfield OAuth row + the "every catalog provider rotates" wording - done by docs: fix stale harness/MCP catalog counts (six->seven, four->every, +higgsfield) #960

Noise (bundled as one Maintenance line)

• chore(ci): add eslint + shellcheck lint gates #962 (eslint + shellcheck lint gates), chore: silence two shellcheck false positives (not bugs) #963 (silence two shellcheck false positives), Add 400x400 MCP server logo for Cline marketplace #966 (Cline marketplace logo, asset only)