docs(resources): add at-a-glance grid to /resources/

Mirror the /prompts/ treatment: a six-card responsive grid above
the per-scope sections (Sessions / Windows / Panes) giving readers
a jump table to every resource template on the page. Card titles
use code formatting for the function name; bodies reuse the
one-line docstring summaries that already feed the
{fastmcp-resource-template} directive, so overview + detail stay
in sync when the docstrings are edited.

Establishes a consistent reader contract across /tools/,
/prompts/, and /resources/ — every MCP surface now has a
scannable overview at the top.

Author: tony

docs/resources.md

@@ -15,6 +15,49 @@ Every resource delivers a snapshot of the tmux hierarchy at call
 time. Agents use them for read-only inspection; any write workflow
 goes through the corresponding {doc}`tools </tools/index>`.
 
+## Available resources
+
+::::{grid} 1 2 2 3
+:gutter: 2 2 3 3
+
+:::{grid-item-card} `get_sessions`
+:link: fastmcp-resource-template-get-sessions
+:link-type: ref
+List all tmux sessions.
+:::
+
+:::{grid-item-card} `get_session`
+:link: fastmcp-resource-template-get-session
+:link-type: ref
+Get details of a specific tmux session.
+:::
+
+:::{grid-item-card} `get_session_windows`
+:link: fastmcp-resource-template-get-session-windows
+:link-type: ref
+List all windows in a tmux session.
+:::
+
+:::{grid-item-card} `get_window`
+:link: fastmcp-resource-template-get-window
+:link-type: ref
+Get details of a specific window in a session.
+:::
+
+:::{grid-item-card} `get_pane`
+:link: fastmcp-resource-template-get-pane
+:link-type: ref
+Get details of a specific pane.
+:::
+
+:::{grid-item-card} `get_pane_content`
+:link: fastmcp-resource-template-get-pane-content
+:link-type: ref
+Capture and return the content of a pane.
+:::
+
+::::
+
 ---
 
 ## Sessions