fix: word-boundary fuzzy alias search, _resolve_alias in remove_server

- "tor" now matches "API TOR contabo..." but NOT "investor"
- Whole-word match first, substring fallback second
- remove_server() now uses _resolve_alias() for consistency

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

tools/ssh.py

@@ -250,12 +250,39 @@ def list_servers(full=False):
             print(f"{alias:<20} {stype:<10} {has_key:<6} {notes}")
 
 
+def _resolve_alias(alias: str, servers: dict) -> str:
+    """Resolve alias — exact match, then whole-word search, then substring fallback."""
+    if alias in servers:
+        return alias
+    query = alias.lower()
+    # 1) Whole-word match (e.g. "tor" matches "API TOR contabo" but NOT "investor")
+    import re
+    word_re = re.compile(r'\b' + re.escape(query) + r'\b', re.IGNORECASE)
+    word_matches = [a for a in servers if word_re.search(a)]
+    if len(word_matches) == 1:
+        return word_matches[0]
+    if len(word_matches) > 1:
+        print(f"Ambiguous: '{alias}' matches multiple servers:")
+        for m in word_matches:
+            print(f"  - {m}")
+        sys.exit(1)
+    # 2) Substring fallback (e.g. "cont" matches "contabo")
+    sub_matches = [a for a in servers if query in a.lower()]
+    if len(sub_matches) == 1:
+        return sub_matches[0]
+    if len(sub_matches) > 1:
+        print(f"Ambiguous: '{alias}' matches multiple servers:")
+        for m in sub_matches:
+            print(f"  - {m}")
+        sys.exit(1)
+    print(f"Unknown: '{alias}'. Available: {', '.join(servers.keys())}")
+    sys.exit(1)
+
+
 def server_info(alias: str):
     """Show server info safe for AI context — NO ip, user, password, port, totp_secret."""
     _, servers = load_servers()
-    if alias not in servers:
-        print(f"Unknown: {alias}. Available: {', '.join(servers.keys())}")
-        sys.exit(1)
+    alias = _resolve_alias(alias, servers)
     s = servers[alias]
     has_key = "yes" if os.path.exists(SSH_KEY_PATH) else "no"
     print(f"Alias:   {s['alias']}")
@@ -318,9 +345,7 @@ def add_server(args):
 def set_note(alias: str, note: str):
     """Update server notes — safe for AI (no credentials exposed)."""
     data, servers = load_servers()
-    if alias not in servers:
-        print(f"Unknown: {alias}. Available: {', '.join(servers.keys())}")
-        sys.exit(1)
+    alias = _resolve_alias(alias, servers)
     for s in data["servers"]:
         if s["alias"] == alias:
             s["notes"] = note
@@ -331,9 +356,7 @@ def set_note(alias: str, note: str):
 
 def remove_server(alias: str):
     data, servers = load_servers()
-    if alias not in servers:
-        print(f"ERROR: Unknown '{alias}'")
-        sys.exit(1)
+    alias = _resolve_alias(alias, servers)
     data["servers"] = [s for s in data["servers"] if s["alias"] != alias]
     save_servers(data)
     remove_from_ssh_config(alias)
@@ -395,12 +418,10 @@ def main():
     if cmd == "--remove" and len(sys.argv) >= 3:
         remove_server(sys.argv[2]); sys.exit(0)
 
-    # Server commands
+    # Server commands — exact match first, then fuzzy search by keyword
     alias = cmd
     _, servers = load_servers()
-    if alias not in servers:
-        print(f"Unknown: {alias}. Available: {', '.join(servers.keys())}")
-        sys.exit(1)
+    alias = _resolve_alias(alias, servers)
 
     server = servers[alias]
     if len(sys.argv) < 3: