feat: link each changelog entry to its PR and commit (#11)

Like Immich's and RomM's release notes: every changelog entry now links to its pull request and its commit, in `CHANGELOG.md` and in the release notes on Gitea:

```
- Search with fzf's scoring and query syntax ([#11](…/pulls/11)) ([65dc2d7](…/commit/65dc2d7…))
```

- `cliff.toml`: the entry template adds the short commit hash as a link; a postprocessor turns the squash commit's `(#N)` into a link to the PR.
- The app shows release notes as text (`U`, and the status pane's changelog to come), so `Release.Notes()` turns Markdown links back into their text: `Search (#11) (65dc2d7)`.

Checked with `git cliff --unreleased` on main: every entry since v0.1.0 gets both links. Test for the link stripping.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Karl-Einar Bergstrøm <karl-einarb@outlook.com>
Reviewed-on: #11

internal/ui/app/layout.go

@@ -101,7 +101,7 @@ func (m *Model) resizeFocused(delta int) bool {
 	if m.focus > paneSecrets {
 		return false
 	}
-	avail := m.leftAvail()
+	avail := m.listAvail()
 	h := m.leftHeights(avail)
 	i := int(m.focus)
 	j := i + 1
@@ -128,6 +128,9 @@ func (m *Model) saveLayout() {
 
 func (m Model) leftAvail() int { return m.h - lipgloss.Height(m.footerView()) }
 
+// listAvail is the rows the three list panes share, under the status pane.
+func (m Model) listAvail() int { return m.leftAvail() - statusH }
+
 func (m *Model) cycleZoom(delta int) {
 	m.zoom = (m.zoom + zoom(delta) + zoomCount) % zoomCount
 }
@@ -138,22 +141,22 @@ func (m *Model) layout() {
 	}
 	m.help.SetWidth(max(0, m.w-1)) // one column in, like messages
 	avail := m.leftAvail()
-	leftW, h := m.leftWidth(), m.leftHeights(avail)
+	leftW, h := m.leftWidth(), m.leftHeights(avail-statusH)
 
 	switch m.zoom {
 	case zoomHalf:
-		if m.focus == paneDetail {
+		if m.focus == paneDetail || m.focus == paneStatus {
 			leftW = minLeftW
 		} else {
 			leftW = max(m.leftWidth(), m.w/2)
 			h = [3]int{tinyPaneH, tinyPaneH, tinyPaneH}
-			h[m.focus] = avail
-			h = fitHeights(h, avail, tinyPaneH)
+			h[m.focus] = avail - statusH
+			h = fitHeights(h, avail-statusH, tinyPaneH)
 		}
 	case zoomFull:
 		// Only the focused pane is drawn; it gets the whole screen.
 		switch m.focus {
-		case paneDetail:
+		case paneDetail, paneStatus:
 			leftW = 0
 		default:
 			leftW = m.w
@@ -162,6 +165,7 @@ func (m *Model) layout() {
 		}
 	}
 
+	m.statusW = leftW
 	m.sources.SetSize(leftW, h[0])
 	m.containers.SetSize(leftW, h[1])
 	m.secrets.SetSize(leftW, h[2])
@@ -176,7 +180,7 @@ func (m Model) active(p pane) bool { return m.focus == p && !m.termBlurred }
 
 func (m Model) panesView() string {
 	spin := m.spin.View()
-	views := [paneCount]func() string{
+	views := [paneStatus]func() string{
 		func() string { return m.sources.View(m.st, m.active(paneSources), spin) },
 		func() string { return m.containers.View(m.st, m.active(paneContainers), spin) },
 		func() string { return m.secrets.View(m.st, m.active(paneSecrets), spin) },
@@ -188,8 +192,11 @@ func (m Model) panesView() string {
 		},
 	}
 	if m.zoom == zoomFull {
+		if m.focus == paneStatus {
+			return views[paneDetail]() // its rows
+		}
 		return views[m.focus]()
 	}
-	left := lipgloss.JoinVertical(lipgloss.Left, views[0](), views[1](), views[2]())
+	left := lipgloss.JoinVertical(lipgloss.Left, m.statusView(), views[0](), views[1](), views[2]())
 	return lipgloss.JoinHorizontal(lipgloss.Top, left, views[3]())
 }