Add schema-trim Hermes plugin

Demotes heavy/situational tools from _HERMES_CORE_TOOLS at startup so
tool_search (enabled: on) can defer them to the catalog. Reduces first-message
tool schema footprint without touching upstream hermes-agent files.

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

__init__.py

@@ -0,0 +1,40 @@
+"""schema-trim: demote heavy-schema tools from core so tool_search can defer them.
+
+Removes cronjob and delegate_task from _HERMES_CORE_TOOLS at plugin load time.
+tool_search (enabled: on) then puts them in the catalog — name + one-line
+description on first message, full schema only when the model needs to call them.
+
+Handler, check_fn, and all other registration metadata are untouched.
+Safe across hermes updates.
+"""
+
+# Tools to demote from "always in schema" to "deferrable via tool_search".
+# Only list tools whose full schemas are genuinely expensive and not needed
+# on most turns. Keep terminal, file, web, memory, browser in core.
+_DEMOTE = (
+    # Scheduling / delegation — large schemas, situational
+    "cronjob", "delegate_task",
+    # Session history — used reactively, not turn 1
+    "session_search",
+    # Browser automation — most sessions never touch the browser
+    "browser_navigate", "browser_snapshot", "browser_click", "browser_type",
+    "browser_scroll", "browser_back", "browser_press", "browser_get_images",
+    "browser_vision", "browser_console", "browser_cdp", "browser_dialog",
+    # Skills management — discovery (skills_list) stays core
+    "skill_manage", "skill_view",
+    # Niche / media tools
+    "image_generate", "text_to_speech", "vision_analyze",
+)
+
+
+def register(ctx):
+    try:
+        from toolsets import _HERMES_CORE_TOOLS
+        for name in _DEMOTE:
+            if name in _HERMES_CORE_TOOLS:
+                _HERMES_CORE_TOOLS.remove(name)
+    except Exception as exc:
+        import logging
+        logging.getLogger(__name__).warning(
+            "schema-trim: failed to demote core tools: %s", exc
+        )