feat: update Mattermost integration to prefer local proxy mirror evidence and enhance context retrieval methods

.agents/workflows/mattermost-sync.md

@@ -2,7 +2,7 @@
 description: Sync Mattermost context and automatically promote high-confidence project memory
 ---
 // turbo-all
-Use the configured Mattermost sync command to fetch fresh communication context and maintain workspace memory automatically.
+Use the configured Mattermost sync command and/or local proxy mirror evidence to fetch fresh communication context and maintain workspace memory automatically.
 
 Preferred command sources:
 
@@ -14,12 +14,17 @@ Run the command and use its output as fresh communication context:
 
 !`if [ -n "$AIW_MATTERMOST_SYNC_CMD" ]; then bash -lc "$AIW_MATTERMOST_SYNC_CMD"; elif [ -n "$FIDELITY_MATTERMOST_SYNC_CMD" ]; then bash -lc "$FIDELITY_MATTERMOST_SYNC_CMD"; elif [ -f scripts/mattermost/sync.sh ]; then bash scripts/mattermost/sync.sh; else echo "No Mattermost sync command is configured."; fi`
 
+Fresh Mattermost evidence, preferring the proxy mirror:
+
+!`python3 scripts/mattermost-proxy/read-context.py --mode latest`
+
 Use this command implicitly when the user asks for the latest or last Mattermost message, especially messages from Jeff or the current manager.
 
 Then:
 
 - if the command fails, stop there and do not edit any workspace files
-- use `ai/inbox/mattermost-latest.md` if it exists and is non-empty
+- prefer the local proxy mirror via `scripts/mattermost-proxy/read-context.py --mode latest` when it has evidence
+- otherwise use `ai/inbox/mattermost-latest.md` if it exists and is non-empty
 - otherwise use `scripts/mattermost/generated/mattermost_context.jsonl` if it exists and is non-empty
 - apply the memory promotion rules from `agent-memory/memory/promotion-rules.md`
 - treat Mattermost output as live communication evidence; the agent decides what becomes promoted memory