feat: add /tools disable/enable/list slash commands with session reset (#1652)

Add in-session tool management via /tools disable/enable/list, plus
hermes tools list/disable/enable CLI subcommands. Supports both
built-in toolsets (web, memory) and MCP tools (github:create_issue).

To preserve prompt caching, /tools disable/enable in a chat session
saves the change to config and resets the session cleanly — the user
is asked to confirm before the reset happens.

Also improves prefix matching: /qui now dispatches to /quit instead
of showing ambiguous when longer skill commands like /quint-pipeline
are installed.

Based on PR #1520 by @YanSte.

Co-authored-by: Yannick Stephan <YanSte@users.noreply.github.com>

hermes_cli/main.py

@@ -3147,17 +3147,66 @@ For more help on a command:
     tools_parser = subparsers.add_parser(
         "tools",
         help="Configure which tools are enabled per platform",
-        description="Interactive tool configuration — enable/disable tools for CLI, Telegram, Discord, etc."
+        description=(
+            "Enable, disable, or list tools for CLI, Telegram, Discord, etc.\n\n"
+            "Built-in toolsets use plain names (e.g. web, memory).\n"
+            "MCP tools use server:tool notation (e.g. github:create_issue).\n\n"
+            "Run 'hermes tools' with no subcommand for the interactive configuration UI."
+        ),
     )
     tools_parser.add_argument(
         "--summary",
         action="store_true",
         help="Print a summary of enabled tools per platform and exit"
     )
+    tools_sub = tools_parser.add_subparsers(dest="tools_action")
+
+    # hermes tools list [--platform cli]
+    tools_list_p = tools_sub.add_parser(
+        "list",
+        help="Show all tools and their enabled/disabled status",
+    )
+    tools_list_p.add_argument(
+        "--platform", default="cli",
+        help="Platform to show (default: cli)",
+    )
+
+    # hermes tools disable <name...> [--platform cli]
+    tools_disable_p = tools_sub.add_parser(
+        "disable",
+        help="Disable toolsets or MCP tools",
+    )
+    tools_disable_p.add_argument(
+        "names", nargs="+", metavar="NAME",
+        help="Toolset name (e.g. web) or MCP tool in server:tool form",
+    )
+    tools_disable_p.add_argument(
+        "--platform", default="cli",
+        help="Platform to apply to (default: cli)",
+    )
+
+    # hermes tools enable <name...> [--platform cli]
+    tools_enable_p = tools_sub.add_parser(
+        "enable",
+        help="Enable toolsets or MCP tools",
+    )
+    tools_enable_p.add_argument(
+        "names", nargs="+", metavar="NAME",
+        help="Toolset name or MCP tool in server:tool form",
+    )
+    tools_enable_p.add_argument(
+        "--platform", default="cli",
+        help="Platform to apply to (default: cli)",
+    )
 
     def cmd_tools(args):
-        from hermes_cli.tools_config import tools_command
-        tools_command(args)
+        action = getattr(args, "tools_action", None)
+        if action in ("list", "disable", "enable"):
+            from hermes_cli.tools_config import tools_disable_enable_command
+            tools_disable_enable_command(args)
+        else:
+            from hermes_cli.tools_config import tools_command
+            tools_command(args)
 
     tools_parser.set_defaults(func=cmd_tools)
     # =========================================================================