[CI/CD] Release v0.12.0 (develop → main)

[chronoai-shining]

Cut release v0.12.0 (minor bump — ornn-web + ornn-api minor from the skillsets / skill-dependencies / assistant feature set; from v0.11.0). Following the CLAUDE.md release procedure.

Shipping since v0.11.0 (28 changesets — 19 minor, 13 patch, 3 docs-empty):

• Skillsets — create/edit web UI, registry view (React Flow), member dependency graph, master prompt, auto version-bump on edit ([Feature] Skillsets — typed, versioned skill bundles (revive #916 with kinds) #969 [Feature] Skillset web UI — full ornn-web surface covering 100% of the skillset API #1059 [Feature] Skillset member-dependency graph — interactive, stored in the master prompt (never mutates skills) #1064 [Feature] Rework skillset UI to mirror the registry + react-flow drag-on-canvas dependency editor #1067 [Feature] Skillset master prompt — required usage-instructions (entry point) per skillset #978)
• Skill dependencies ([Feature] Skill dependencies — declare prerequisite skills in metadata + closure resolver #968)
• Ornn assistant mascot — right-edge centered default ([Feature] Ornn Assistant — repo-aware Q&A chatbot (API + web widget) #970)
• Skill explorer panel in skillset create/edit — scope tabs + version selection
• Launch-promo foundation — admin manual award + /me status ([Bug] [Launch Promo] GitHub Star reward delivery is promised, but automatic eligibility and redemption-code issuance are not implemented in Ornn #724)
• Landing announcement popups (glassmorphic), graph popup click-to-open, draggable graph nodes
• Chat-completion tool calls normalized into Responses events ([Bug] [Playground Runtime] runtime / mixed skills do not execute sandbox tool when the LLM provider uses chat-completion format #608)
• User directory search/resolve endpoints gated + scoped ([Misc] Gate/scope user-directory enumeration on /users/search and /users/resolve #845)
• Assorted skillset graph / picker / layout fixes (technical)

Curated user-facing notes: .github/release-notes-20260612.md.

Steps:
0. ✅ Release-notes file landed on develop (#1104).

1. develop → main promotion PR (merge).
2. Review + squash-merge the bot's release/v0.12.0 → main PR.
3. Bot tags v0.12.0 + GitHub Release + sync-back to develop (merge commit, never squash).

[chronoai-shining]

✅ Released v0.12.0.

• Promotion PR release: promote develop → main (v0.12.0) #1107 (develop → main, merge commit)
• Version-bump PR chore: version packages → v0.12.0 #1108 (squash) — ornn-api/ornn-web → 0.12.0, sdk/typescript → 0.4.0, all 28 changesets consumed
• Tag v0.12.0 + GitHub Release published from release-notes-20260612.md: https://github.com/ChronoAIProject/Ornn/releases/tag/v0.12.0
• Sync-back PR chore: sync main → develop after v0.12.0 #1109 (main → develop, merge commit) — merge-base(main, develop) == main HEAD verified, no phantom-bump risk next release

Closing manually: Closes #1106 didn't auto-fire because the promotion PR merged into main, not the default branch develop.