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

.agents/workflows/latest-message.md

@@ -2,7 +2,7 @@
 description: Force-sync Mattermost and answer from the latest matching message
 ---
 
-Force-refresh Mattermost first, then answer the user's question from the refreshed inbox.
+Refresh/read Mattermost first, then answer the user's question from the freshest evidence. Prefer the local proxy mirror when it is present; legacy sync output is fallback evidence.
 
 Use this when the user asks for:
 
@@ -11,46 +11,13 @@ Use this when the user asks for:
 - the latest Mattermost update
 - the latest message in `fidelity-preguntas`
 
-Run sync:
+Run sync/fallback refresh:
 
 !`start=$(date +%s); if [ -n "$AIW_MATTERMOST_SYNC_CMD" ]; then bash -lc "$AIW_MATTERMOST_SYNC_CMD"; elif [ -n "$FIDELITY_MATTERMOST_SYNC_CMD" ]; then bash -lc "$FIDELITY_MATTERMOST_SYNC_CMD"; elif [ -f scripts/mattermost/sync.sh ]; then bash scripts/mattermost/sync.sh; else echo "No Mattermost sync command is configured."; fi; status=$?; end=$(date +%s); echo "__MATTERMOST_SYNC_SECONDS__=$((end - start))"; exit "$status"`
 
-Read a focused slice of refreshed Mattermost context:
+Read a focused slice of refreshed Mattermost context, preferring the proxy mirror:
 
-!`python3 - <<'PY'
-import json
-from pathlib import Path
-
-paths = [
-    Path("ai/inbox/mattermost-latest.md"),
-    Path("scripts/mattermost/generated/mattermost_context.jsonl"),
-]
-
-source = next((path for path in paths if path.is_file() and path.stat().st_size > 0), None)
-if not source:
-    print("No Mattermost context available after sync.")
-    raise SystemExit(0)
-
-records = []
-for line in source.read_text().splitlines():
-    line = line.strip()
-    if not line:
-        continue
-    try:
-        records.append(json.loads(line))
-    except json.JSONDecodeError:
-        continue
-
-manager_names = {"jeff", "jeff.dewitte"}
-manager_records = [
-    record for record in records
-    if str(record.get("username", "")).lower() in manager_names
-]
-
-focused = manager_records[-10:] if manager_records else records[-15:]
-for record in focused:
-    print(json.dumps(record, ensure_ascii=False))
-PY`
+!`python3 scripts/mattermost-proxy/read-context.py --mode focused`
 
 User request: