Add merge-friendly Kindex project graph

[jmc-wander]

Adds the committed Kindex project graph artifacts for this repository.

Included artifacts:

• .kin/config
• .kin/.gitignore for local/cache/private Kindex state
• .kin/code-map.json
• .kin/index.json

Generated from origin/main with Kindex 0.21.3. The branch stages only .kin files plus root .gitignore when needed to keep those artifacts unignored.

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Note

Low Risk
Metadata-only additions with no changes to application logic, auth, or data paths; main risk is merge noise or stale graph if not regenerated after large refactors.

Overview
This PR introduces a committed Kindex (.kin) project graph for the gcpde repo so tooling can use a versioned, merge-friendly view of the codebase without relying on local-only index state.

It adds .kin/config (project name, team audience, wander/gcpde domains, and permissive work/git policies with Linear and tag gates disabled), .kin/index.json (12 indexed nodes for Python modules and key symbols under gcpde/), and .kin/code-map.json (layered graph with core vs domain nodes, contains edges from symbols to files, and a guided tour). .kin/.gitignore keeps local/cache/private paths and SQLite artifacts out of git.

There are no runtime or application code changes in this diff—only generated/metadata artifacts.

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