Plugin platforms now get full toolset support without any entries in
toolsets.py.
tools_config._get_platform_tools(): Falls back to 'hermes-<name>'
when the platform isn't in the static PLATFORMS dict. No more
KeyError for plugin platforms.
toolsets.resolve_toolset(): Auto-generates a toolset for plugin
platforms (hermes-<name>) containing _HERMES_CORE_TOOLS plus any
tools the plugin registered into a matching toolset name. This means
a plugin can call ctx.register_tool(toolset='irc', ...) and those
tools will be included in the hermes-irc toolset automatically.
webhook.py: Registry-aware cross-platform delivery.
run_agent.py: Platform hints from plugin registry.
IRC adapter: Token lock + platform hint.
Removed dead token-empty-warning extension.
Updated docs.
52d9e57825