The Services pane is a card overview with per-service detail views

[czpython]

The Services settings pane now uses a list/detail flow instead of full-width credential forms.

Overview. One compact card per provider: name, one-line description, connection status, and the connected identity (the GitHub App slug). Cards sit in a two-column grid, one column on narrow layouts. The whole card is a button. No credential fields appear on the overview, and the repeated "SERVICE IDENTITY" label is gone.

Detail. Clicking a card swaps in a focused view in the same content pane — no nested modal. It shows a back action, the provider name and status, identity facts in monospace, the connection date, and the provider's actions. Credential fields only render after an explicit choice:

• GitHub disconnected: Create GitHub App is the primary action; Connect an existing GitHub App is a secondary disclosure that reveals the paste form.
• GitHub connected: Manage installations and a lower-emphasis Replace connection; the replace form keeps the create-App path.
• Jira disconnected: a Connect Jira action reveals the Base URL / email / token / webhook secret fields.
• Jira connected: saved facts plus Replace connection.

Green marks connected status only; disconnected is neutral. The decorative violet top borders are gone. The pane reuses the MCP pane's measure, type scale, and status treatment.

Behavior is unchanged: immediate connection persistence outside the modal's Save, write-only secrets, replacement verification, busy/error states, and the BroadcastChannel refresh after GitHub App creation — the listener moved up to the pane so a callback landing while the overview shows still refreshes. The dead .si-connect-form CSS (its only consumer was the old inline form) is removed, and the test file is renamed ServicesPane.test.tsx to match the component it renders.