feat: Implement Mattermost sync functionality and enhance workspace context management

scripts/README.md

@@ -1,10 +1,44 @@
 # Scripts
 
-This directory is reserved for future helpers that automate:
+This directory contains helpers that automate:
 
 - context aggregation
 - standup generation
 - manager update drafting
 - Mattermost-ready message formatting
 
-No automation has been implemented yet. The current workflow is document-driven.
+The default workspace Mattermost extractor now lives in:
+
+- `scripts/mattermost/`
+
+Recommended default command:
+
+```bash
+bash scripts/mattermost/sync.sh
+```
+
+Bootstrap command:
+
+```bash
+bash scripts/mattermost/bootstrap.sh
+```
+
+The current Mattermost extractor is stdlib-only and does not require installing `requests`.
+
+If you still want to override it with another script, expose that to OpenCode with:
+
+- `FIDELITY_MATTERMOST_SYNC_CMD`
+
+Example:
+
+```bash
+export FIDELITY_MATTERMOST_SYNC_CMD="/absolute/path/to/your-mattermost-sync-script"
+```
+
+Expected behavior:
+
+- print the latest relevant Mattermost context to stdout
+- avoid interactive prompts
+- return a non-zero exit code on failure
+
+OpenCode can then use that output to refresh `ai/inbox/mattermost-latest.md` proactively.