docs(agents): add VS Code extension to project map

[superyoung9208]

Related Issue

No linked issue.

Problem

The root AGENTS.md project map omits apps/vscode, even though the official VS Code extension is now part of the repository. This leaves the project map incomplete and makes the extension's runtime and shared-state boundaries harder for contributors and coding agents to discover.

PR #647 previously proposed adding a similar project-map entry, but it remains open as part of an earlier VS Code workspace implementation. The current extension implementation was merged through #1769 without the corresponding root project-map update.

What changed

Added apps/vscode to the project map, documenting:

• its extension identifier and minimum VS Code version;
• its Node SDK, Extension Host, and webview architecture;
• its primary entry points;
• the configuration, authentication, MCP, and session state shared through KIMI_CODE_HOME.

Validation

• Verified the description against apps/vscode/package.json, its runtime entry points, and README.
• Ran git diff --check.
• No tests were run because this is a documentation-only change.

Checklist

• I have read the CONTRIBUTING document.
• I have linked a related issue, or explained the problem above.
• Tests are not applicable because this is a documentation-only change.
• Ran gen-changesets; this PR does not need a changeset.
• gen-docs is not needed because this does not change user-facing behavior or documentation.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 3102470

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