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Devin Foley
2c53437fc9
## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work > - The UI receives live run/issue events over a websocket at `/api/companies/:id/events/ws`; the server authorizes upgrades with a bearer token or a Better Auth session > - On a cloud-managed deployment, browsers authenticate through trusted `x-paperclip-cloud-*` headers injected by the managing front door — they never hold a local Better Auth session, and the Express middleware lane that understands those headers is not consulted for websocket upgrades > - Every browser websocket upgrade behind the front door therefore resolves no identity and is rejected 403: the live-events socket has never connected on a managed instance, leaving permanent reconnect churn and console failure noise while the UI silently degrades to polling > - This pull request adds a cloud-actor lane to the upgrade authorization, reusing the same trusted-header resolver the HTTP middleware uses > - The benefit is working realtime updates on managed instances, an end to the reconnect churn, and unchanged self-hosted behavior ## Linked Issues or Issue Description No existing issue. Description follows the bug template: **What happened?** On a cloud-managed instance, the browser console shows `WebSocket connection to 'wss://…/api/companies/<id>/events/ws' failed:` repeating indefinitely for every company, on a healthy instance. The server rejects each upgrade with 403 because `authorizeUpgrade` in `server/src/realtime/live-events-ws.ts` only knows bearer tokens and Better Auth sessions, while cloud-proxied browsers authenticate via `x-paperclip-cloud-*` trusted headers (handled only by the Express `actorMiddleware` lane in `server/src/middleware/auth.ts`). **Expected behavior** A browser that authenticates through the trusted cloud headers can open the live-events websocket for any company in its membership scope, exactly as it can call the HTTP API for those companies. **Steps to reproduce** 1. Run Paperclip in `authenticated` mode behind a proxy that injects the `x-paperclip-cloud-*` headers with a valid `PAPERCLIP_CLOUD_TENANT_SERVER_TOKEN`. 2. Load any company page in a browser (no local Better Auth session). 3. HTTP API calls succeed; every `/events/ws` upgrade is rejected 403 and the UI retries forever. ## What Changed - `server/src/middleware/auth.ts`: `resolveCloudTenantActor` now accepts a minimal `CloudActorHeaderSource` (`header(name)`) instead of an Express `Request` — `Request` satisfies it unchanged — plus `cloudActorHeaderSourceFromHeaders` to adapt raw `IncomingMessage.headers`. - `server/src/realtime/live-events-ws.ts`: `authorizeUpgrade` gains an injected `resolveCloudActor` lane, tried before the Better Auth session fallback in `authenticated` mode. A resolved cloud actor is authoritative: the upgrade is authorized only for a company in the actor's membership scope (`companyIds`, the same scope the HTTP lane grants). Absent/unresolvable cloud headers fall through to the session path. - `server/src/index.ts`: wires `resolveCloudActor` through `resolveCloudTenantActor` + the header shim. The resolver self-gates: without `PAPERCLIP_CLOUD_TENANT_SERVER_TOKEN` and a matching trust token it returns null, so self-hosted deployments never take this path. - Tests: upgrade authorized for an in-scope company (session resolver not consulted), rejected for an out-of-scope company, fall-through to session auth when no cloud actor resolves; header-shim resolution from a raw lowercased header map including `string[]` values. ## Verification - `pnpm vitest run server/src/__tests__/live-events-ws.test.ts server/src/middleware/cloud-tenant-actor.test.ts` — 25 tests pass. - `pnpm typecheck` in `server/` — clean. - Not verified live end-to-end: that requires a managed instance running this build; the direct probe evidence (HTTP authenticated fine, every WS upgrade 403) matches the code path exactly. ## Risks Low risk. The new lane only activates when the deployment configures the cloud trust token and the request presents it; both checks already protect the HTTP lane. Authorization scope is the same `companyIds` set the HTTP middleware computes (primary stack company plus the user's real membership rows). The cloud resolver's user/company materialization writes are debounced (existing behavior shared with the HTTP lane), so websocket reconnect storms do not amplify database writes. Self-hosted instances see no behavioral change, covered by the fall-through test. ## Model Used - Claude (Anthropic), Claude Fable 5 (`claude-fable-5`), via Claude Code CLI with extended thinking and tool use (code search, edit, test execution; diagnosis included live websocket handshake probes against a managed instance). ## Checklist - [x] I have included a thinking path that traces from project context to this change - [x] I have specified the model used (with version and capability details) - [x] I have checked ROADMAP.md and confirmed this PR does not duplicate planned core work - [x] I have searched GitHub for duplicate or related PRs and linked them above - [x] I have either (a) linked existing issues with `Fixes: #` / `Closes #` / `Refs #` OR (b) described the issue in-PR following the relevant issue template - [x] I have not referenced internal/instance-local Paperclip issues or links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip` URLs) - [x] My branch name describes the change (e.g. `docs/...`, `fix/...`) and contains no internal Paperclip ticket id or instance-derived details - [x] I have run tests locally and they pass - [x] I have added or updated tests where applicable - [x] I have updated relevant documentation to reflect my changes - [x] I have considered and documented any risks above - [ ] All Paperclip CI gates are green - [ ] Greptile is 5/5 with no open P2s, recommendations, or follow-ups - [x] I will address all Greptile and reviewer comments before requesting merge