v0.9.0-rc1

What's Changed

• fix(pins): sync the canonical gate — manifest.json is now guarded by @cdeust in #181
• fix(registry): write the .mcpb sha256 under the schema's fileSha256 key by @cdeust in #187
• feat: package code intelligence for Codex and Gemini by @cdeust in #188
• docs: present code intelligence as cross-platform by @cdeust in #189
• chore(pins): resync the canonical gate from cdeust/Cortex@main by @cdeust in #190
• feat: rename to AI Architect Codebase by @cdeust in #191
• fix(distribution): verify canonical host packages by @cdeust in #192

Full Changelog: v0.8.4...v0.9.0-rc1