feat: add --check-instructions, pre-flight validation, and mtime tracking to sync script

- P3-T1: --check-instructions flag + check_instructions() prints a table of all
  agents' instructionsFilePath with status (✅ OK / ❌ MISSING / ⚠ NOT SET),
  size, mtime, and ⚠ DRIFT when file has changed since last sync
- P3-T2: --apply now runs a pre-flight check on master agents and aborts if any
  instruction file is missing, before touching the DB or calling any API
- P3-T3: get_claude_md_mtime() helper; --apply stamps claude_md_mtime and
  claude_md_last_synced into each mirror agent's metadata via the PATCH call
- P3-T4: alias check-agents added to ~/.bashrc

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/sync_agents_across_companies.py

@@ -259,6 +259,14 @@ async def apply_diff(mirror_id: str, agent_name: str, diff: dict) -> list[str]:
     if "runtime_config" in diff:
         patch_body["runtimeConfig"] = diff["runtime_config"]["to"]
 
+    # Stamp claude_md_mtime + last_synced into metadata
+    mtime = diff.get("_claude_md_mtime")
+    if mtime:
+        current_meta = dict(patch_body.get("metadata") or {})
+        current_meta["claude_md_mtime"] = mtime
+        current_meta["claude_md_last_synced"] = datetime.now(timezone.utc).isoformat()
+        patch_body["metadata"] = current_meta
+
     if patch_body:
         status, data = await call_patch(mirror_id, patch_body)
         if status >= 400:
@@ -278,12 +286,65 @@ async def apply_diff(mirror_id: str, agent_name: str, diff: dict) -> list[str]:
     return errors
 
 
+def get_claude_md_mtime(adapter_config: dict) -> str | None:
+    """Return Unix mtime of the agent's instructionsFilePath, or None if file missing."""
+    path = adapter_config.get("instructionsFilePath", "")
+    if not path or not os.path.exists(path):
+        return None
+    return str(int(os.path.getmtime(path)))
+
+
+async def check_instructions(agents: list[dict]) -> bool:
+    """Print a report of all agents' instruction files. Returns True if all OK."""
+    from datetime import datetime
+
+    all_ok = True
+    print(f"\n{'Agent':<30} {'File':<55} {'Status':<12} {'Size':>7} {'Modified'}")
+    print("-" * 115)
+
+    for agent in agents:
+        adapter_cfg = agent.get("adapter_config") or {}
+        if isinstance(adapter_cfg, str):
+            adapter_cfg = json.loads(adapter_cfg)
+
+        file_path = adapter_cfg.get("instructionsFilePath", "")
+        name = (agent.get("name") or agent.get("id") or "?")[:29]
+
+        if not file_path:
+            print(f"{name:<30} {'(none)':<55} {'⚠ NOT SET':<12}")
+            continue
+
+        if not os.path.exists(file_path):
+            print(f"{name:<30} {file_path[-54:]:<55} {'❌ MISSING':<12}")
+            all_ok = False
+            continue
+
+        stat = os.stat(file_path)
+        size_kb = stat.st_size // 1024
+        mtime = datetime.fromtimestamp(stat.st_mtime).strftime("%Y-%m-%d %H:%M")
+
+        # Check for drift vs DB metadata
+        metadata = agent.get("metadata") or {}
+        if isinstance(metadata, str):
+            metadata = json.loads(metadata)
+        db_mtime = metadata.get("claude_md_mtime", "")
+        actual_mtime = str(int(stat.st_mtime))
+        drift = " ⚠ DRIFT" if db_mtime and db_mtime != actual_mtime else ""
+
+        print(f"{name:<30} {file_path[-54:]:<55} {'✅ OK':<12} {size_kb:>5}KB  {mtime}{drift}")
+
+    print()
+    return all_ok
+
+
 async def main() -> None:
     p = argparse.ArgumentParser()
     g = p.add_mutually_exclusive_group(required=True)
     g.add_argument("--verify", action="store_true", help="Show current drift, no changes")
     g.add_argument("--dry-run", action="store_true", help="Show what would change")
     g.add_argument("--apply", action="store_true", help="Backup + apply changes")
+    g.add_argument("--check-instructions", action="store_true",
+                   help="Scan all agents' instructionsFilePath and report missing/outdated files")
     p.add_argument("--only", help="Sync only the named agent (e.g., 'עוזר משפטי')")
     args = p.parse_args()
 
@@ -295,6 +356,11 @@ async def main() -> None:
     finally:
         await conn.close()
 
+    if args.check_instructions:
+        all_agents = master_agents + mirror_agents
+        all_ok = await check_instructions(all_agents)
+        sys.exit(0 if all_ok else 1)
+
     mirror_by_name = {a["name"]: a for a in mirror_agents}
 
     print(f"\n=== Master (CMP, 1xxx): {len(master_agents)} agents ===")
@@ -332,6 +398,14 @@ async def main() -> None:
         return
 
     # APPLY
+    # Pre-flight: abort if any master agent is missing its instructions file
+    print("🔍 Pre-flight: checking instruction files...")
+    all_ok = await check_instructions(master_agents)
+    if not all_ok:
+        print("❌ Abort: one or more instruction files are missing. Fix before --apply.")
+        sys.exit(1)
+    print("✅ Pre-flight passed.\n")
+
     print(f"\n=== Backup ===")
     backup_path = backup_agents_table()
     print(f"  ✓ {backup_path}")
@@ -340,6 +414,11 @@ async def main() -> None:
     all_errors: list[str] = []
     for master, mirror, diff in plan:
         print(f"\n  → {master['name']} ({mirror['id']})")
+        # Inject mtime into diff so apply_diff can stamp metadata
+        master_ac = master.get("adapter_config") or {}
+        mtime = get_claude_md_mtime(master_ac)
+        if mtime:
+            diff["_claude_md_mtime"] = mtime
         errors = await apply_diff(mirror["id"], master["name"], diff)
         if errors:
             for e in errors: