v0.12.0

What's Changed

• fix(mcp): unwrap i3X envelopes, surface errors, read components, real in-process routes by @erossignon in #3
• fix(core): root Objects have parentId null (conformance EXP-15) by @erossignon in #4
• fix: MCP stress findings: explore fan-out, auth check, output size, quality mapping by @erossignon in #5

Full Changelog: v0.11.2...v0.12.0