fix: add browser_console to browser toolset and core tools list (#1084)

browser_console was registered in the tool registry but missing from
all toolset definitions (TOOLSETS, _HERMES_CORE_TOOLS, _LEGACY_TOOLSET_MAP),
so the agent could never discover or use it.

Added to all 4 locations + 4 wiring tests.

Cherry-picked from PR #1084 by @0xbyt4 (authorship preserved in tests).

model_tools.py

@@ -149,7 +149,7 @@ _LEGACY_TOOLSET_MAP = {
         "browser_navigate", "browser_snapshot", "browser_click",
         "browser_type", "browser_scroll", "browser_back",
         "browser_press", "browser_close", "browser_get_images",
-        "browser_vision"
+        "browser_vision", "browser_console"
     ],
     "cronjob_tools": ["cronjob"],
     "rl_tools": [