feat(sdk): M-Magic 1-4 — high-level SDK with magic drop-in
Phase A complete: createShade() one-liner with auto-establish, auto-publish,
and auto-replenish.
M-Magic 1-4 rolled into @shade/sdk:
- createShade() factory with config validation and storage resolution
(memory | sqlite:... | { type: 'postgres', url: ... } | explicit instance)
- Shade class wraps crypto + storage + session manager + transport
- Auto-publish: initialize() automatically registers with the prekey server
- Auto-establish: send() transparently fetches bundles and creates sessions
on first message to a new peer
- Per-address mutex serializes concurrent sends to prevent ratchet corruption
- BackgroundTasks class for periodic replenishment + opt-in identity rotation
- rotate() rebuilds the transport with the new signing key so subsequent
signed operations work after rotation
- onMessage() handler API for incoming plaintext
API:
const shade = await createShade({ prekeyServer, storage });
await shade.send('bob', 'hello');
await shade.receive('alice', envelope);
shade.onMessage((from, msg) => ...);
await shade.rotate();
await shade.shutdown();
13 new SDK tests covering: happy path, auto-publish, two-process
conversation, onMessage handlers, concurrent sends, unknown peer,
fingerprint verification, shutdown, manual replenish, auto-replenish
off, rotate, and config validation.
233 tests passing, 0 failures.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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