* fix(mattermost): add WebSocket reconnection with exponential backoff
Fixes#13980
The Mattermost WebSocket monitor had no error handling around the
reconnection loop. When connectOnce() threw (e.g. 'fetch failed' from
network issues), the error propagated through the while loop, causing
the gateway to log 'channel exited' and never restart.
Extract runWithReconnect() utility that:
- Catches thrown errors from connectFn and retries
- Uses exponential backoff (2s→4s→8s→...→60s cap)
- Resets backoff after successful connections
- Stops cleanly on abort signal
- Reports errors and reconnect delays via callbacks
* fix(mattermost): make backoff sleep abort-aware and reject on WS connect failure
* fix(mattermost): clean up abort listener on normal timeout to prevent leak
* fix(mattermost): skip error reporting when abort causes connection rejection
* fix(mattermost): use try/finally for abort listener cleanup in connectOnce
* fix: force-close WebSocket on error to prevent reconnect hang
* fix: use ws.terminate() on abort for reliable teardown during CONNECTING state
* fix(mattermost): use initial retry delay for reconnect backoff
---------
Co-authored-by: Peter Steinberger <steipete@gmail.com>
* fix: use .js extension for ESM imports of RoutePeerKind
The imports incorrectly used .ts extension which doesn't resolve
with moduleResolution: NodeNext. Changed to .js and added 'type'
import modifier.
* fix tsconfig
* refactor: unify peer kind to ChatType, rename dm to direct
- Replace RoutePeerKind with ChatType throughout codebase
- Change 'dm' literal values to 'direct' in routing/session keys
- Keep backward compat: normalizeChatType accepts 'dm' -> 'direct'
- Add ChatType export to plugin-sdk, deprecate RoutePeerKind
- Update session key parsing to accept both 'dm' and 'direct' markers
- Update all channel monitors and extensions to use ChatType
BREAKING CHANGE: Session keys now use 'direct' instead of 'dm'.
Existing 'dm' keys still work via backward compat layer.
* fix tests
* test: update session key expectations for dmdirect migration
- Fix test expectations to expect :direct: in generated output
- Add explicit backward compat test for normalizeChatType('dm')
- Keep input test data with :dm: keys to verify backward compat
* fix: accept legacy 'dm' in session key parsing for backward compat
getDmHistoryLimitFromSessionKey now accepts both :dm: and :direct:
to ensure old session keys continue to work correctly.
* test: add explicit backward compat tests for dmdirect migration
- session-key.test.ts: verify both :dm: and :direct: keys are valid
- getDmHistoryLimitFromSessionKey: verify both formats work
* feat: backward compat for resetByType.dm config key
* test: skip unix-path Nix tests on Windows
