- Check NO_PROXY/no_proxy before creating HttpsProxyAgent; skip proxy
when slack.com matches an exclusion entry (exact, suffix, or wildcard).
- Wrap HttpsProxyAgent construction in try/catch so malformed proxy URLs
degrade to direct connectivity instead of crashing Slack channel init.
- Extract resolveProxyUrlFromEnv and isHostExcludedByNoProxy as testable
helpers.
- Add tests for NO_PROXY exclusion, wildcard, unrelated hosts, and
malformed URL resilience.
When HTTPS_PROXY or HTTP_PROXY env vars are set, create an
HttpsProxyAgent and pass it as the `agent` option through
@slack/bolt → @slack/socket-mode → ws, so the WebSocket upgrade
request is tunneled through the proxy.
This fixes Slack Socket Mode in environments where all outbound
traffic must go through an HTTP CONNECT proxy (e.g. sandboxed
containers, corporate networks). Previously the ws library opened
a direct connection to wss-primary.slack.com, ignoring proxy env
vars entirely.
The approach mirrors the existing Discord gateway proxy support
(extensions/discord/src/monitor/gateway-plugin.ts) which uses the
same https-proxy-agent library.
Fixes#57405
Move all Slack channel implementation files from src/slack/ to
extensions/slack/src/ and replace originals with shim re-exports.
This follows the extension migration pattern for channel plugins.
- Copy all .ts files to extensions/slack/src/ (preserving directory
structure: monitor/, http/, monitor/events/, monitor/message-handler/)
- Transform import paths: external src/ imports use relative paths
back to src/, internal slack imports stay relative within extension
- Replace all src/slack/ files with shim re-exports pointing to
the extension copies
- Update tsconfig.plugin-sdk.dts.json rootDir from "src" to "." so
the DTS build can follow shim chains into extensions/
- Update write-plugin-sdk-entry-dts.ts re-export path accordingly
- Preserve extensions/slack/index.ts, package.json, openclaw.plugin.json,
src/channel.ts, src/runtime.ts, src/channel.test.ts (untouched)
