Add cnp_ personal access tokens so the CLI, MCP server, and external
agents authenticate without a browser session — the agent-first spine
from ROADMAP2 phase A. Modeled on agent_auth_tokens: raw token shown
once, only SHA-256 hash stored.
- user_tokens table (goose migration + sqlc), name/prefix/scope/expiry,
owner-scoped revoke, last_used_at stamping
- middleware: cnp_ bearer resolution, read scope gates mutations with
403 SCOPE_INSUFFICIENT, non-admin scopes cap is_admin even for admin
owners — a token never outranks its scope or its owner
- GET/POST/DELETE /api/v1/user/tokens + OpenAPI + generated types
- Settings UI: create with scope/expiry pickers, one-time token display
with copy, list with last-used/expiry, confirm-revoke
- docs: OPERATIONS.md section, README feature line
Verified end-to-end against live Postgres: create/list/revoke, read
scope blocks PUT (403), write PAT on admin owner blocked from admin
routes (403), admin scope works, revoked token returns 401.
Authored By: TDvorak <[email protected]>