feat: Phase 1 — CLI skeleton + typed client + auth login + get commands

[2000game]

Phase 1 — CLI skeleton + typed client + auth login + get. The first immediately-useful slice.

Part of #1.

Scope

• Bootstrap the TS project: Node + TypeScript, CLI framework (oclif or commander), tsconfig, ESLint/Prettier, Vitest, CI (GitHub Actions).
• Layer 0 — Auth/HTTP: login-token handling, session cookie + CSRF, auto re-login, rate-limit/retry. Store token in macOS Keychain (fallback .env).
• ct auth login — capture personal token, verify, persist to Keychain.
• Layer 1 — Typed client: generate from OpenAPI (openapi-typescript + openapi-fetch); script to regenerate on CT release.
• Layer 2 — imperative get commands: ct get groups | campuses | group-types | … with basic filtering + JSON/table output.
• README with install + usage.

Definition of done

• ct auth login then ct get campuses returns live data from our CT instance.
• Typed client compiles against the real spec; regeneration documented.
• CI green (lint + typecheck + tests).

Distribution (stub, not blocking)

• Homebrew tap eqrm/tap/ct or npm bin — wire up later; Phase 1 just needs a local ct binary.

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Phase 1 scaffold — pushed to main (0344bdc)

TypeScript CLI is up and green (typecheck ✅ · lint ✅ · 8 tests ✅ · build ✅ · ct --help runs).

Done:

• Project bootstrap: Node/TS, commander, tsup build → ct binary, tsx dev, Vitest, ESLint (flat), Prettier, GitHub Actions CI.
• Layer 0/1 client (src/api/ctClient.ts): login-token → cookie → CSRF session handshake, cookie jar, CSRF on writes, CtApiError. Unit-tested with mocked fetch.
• Token store (~/.config/ct-cli/credentials.json, 0600; CT_LOGINTOKEN override).
• ct auth login/status/logout — login also asserts CT ≥ 3.96 via /info.
• ct get <resource> for the confirmed readable paths + ct get raw <path>.
• Placeholder plan/apply/adopt/destroy (discoverable in help, exit 2).

Remaining for Phase 1:

• Generate the typed client (npm run generate:client → openapi-typescript) and swap the hand-written request() over to openapi-fetch.
• Live-verify ct auth login + ct get campuses against the instance (needs a personal token) — also the last Phase 0 box.
• Move token store to macOS Keychain (file stays as fallback).
• Rate-limit/retry on the HTTP layer.

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Live check passed ✅ — full round-trip against the instance works (CT 3.134.0, campuses returned).

Finding — IDs can be 0: the Mainz campus has "id": 0. The state layer and all diff logic must compare IDs against null/undefined, never truthiness (if (id) would drop campus 0).

Typed client: npm run generate:client works but produces an 8.2 MB / 180k-line schema.d.ts. Deciding how to handle it (commit vs CI-generate vs defer) before swapping the hand-written client to openapi-fetch — kept gitignored for now. The hand-written client is proven live, so this is non-blocking.

[2000game]

Closing as functionally complete — merged via the initial scaffold + #8 (Keychain token store, HTTP retry). Delivered: TS/commander bootstrap, CI (.github/workflows/ci.yml), Layer 0 auth (login-token → cookie/CSRF, retry, Keychain), ct auth login, ct get campuses|groups|group-types|raw, README.

Caveat (one scope item deferred): the Layer 1 generated typed client (openapi-typescript + openapi-fetch) is not realized — only the generate:client script exists; the client is hand-written (src/api/schema.d.ts absent, no openapi-fetch usage). This swap was explicitly deferred in Phase 0. File a dedicated follow-up if you want it tracked.