v0.11.0

What changed

• Release the 0.11.0 work already merged to main.
• Add the app gallery workflow and static gallery page generator.
• Add on-demand GitHub issue based app builder workflow.
• Add the appbun badge command for README builder badges.
• Add appbun mcp, exposing appbun_create, appbun_recipes, and appbun_discover over stdio for AI agents.
• Add recipe request and build request issue templates plus docs updates.

Verification

• bun install
• bun run check
• bun run test
• bun run build
• npm pack --dry-run
• CLI smoke: appbun --version, appbun badge, appbun recipes --concept ai, appbun mcp --help
• Gallery smoke: bun run scripts/build-gallery-page.mjs
• Scaffold smoke: create https://example.com, verify generated manifest version 0.11.0, bun install, bun run build