hermes-agent/tests/plugins/platforms/photon/__init__.py
Teknium 5b4e431e8c feat(gateway): add Photon Spectrum (iMessage) platform plugin
First-class iMessage support via Photon's managed Spectrum platform.
Targeted as a successor to the BlueBubbles adapter — Photon allocates
the iMessage line, handles delivery, and abuse-prevention so users
don't have to run their own Mac relay. Free tier uses Photon's shared
line pool.

Architecture:
- Inbound: signed JSON webhooks (X-Spectrum-Signature, HMAC-SHA256)
  delivered to a local aiohttp listener. Dedupes on message.id,
  rejects deliveries with >5min timestamp drift.
- Outbound: small supervised Node sidecar that runs the spectrum-ts
  SDK. Photon does not currently expose a public HTTP send-message
  endpoint; the sidecar is the only way to call Space.send() today.
  When Photon ships an HTTP send endpoint we collapse the sidecar
  into _sidecar_send and drop the Node dep — every other layer of
  the plugin stays the same.
- Setup: 'hermes photon login' runs the RFC 8628 device-code flow;
  'hermes photon setup' creates a Spectrum-enabled project, creates
  a shared user (free tier), installs the sidecar's npm deps.
- Webhook management: 'hermes photon webhook register|list|delete'.
- Credentials persisted under credential_pool.photon /
  credential_pool.photon_project in ~/.hermes/auth.json.

Plugin path (not built-in) — per current policy (May 2026), all new
platforms ship under plugins/platforms/. Registers itself via
ctx.register_platform() + ctx.register_cli_command(), zero edits to
core gateway code.

Tests cover:
- HMAC-SHA256 signature verification (happy path, tampered body,
  wrong secret, drift, missing v0 prefix, empty inputs, non-integer
  timestamp)
- Inbound dispatch for text DMs, group ids (any;+;...), and
  attachment metadata markers
- Deduplication window
- check_requirements gating when Node is absent
- Device-code flow: request, header-based token return,
  body-fallback token return, access_denied propagation
- Project/user/webhook API clients with mocked httpx

Known limitations (current Photon API):
- Attachments are metadata only — no download URL yet
- Outbound attachment send not wired (sidecar can add easily)
- Reactions / message effects not exposed yet

Docs: website/docs/user-guide/messaging/photon.md + sidebar entry.
2026-06-08 13:38:30 -07:00

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"""Unit tests for the Photon Spectrum platform plugin."""