feat: the changelog in the status pane, built in (#12)

The status pane's rows (`0`, then `enter`) end with the changelog: every release up to the running one, newest first.

```
v0.2.0     2026-10-12
           added: Search with fzf's scoring and query syntax (#11) (65dc2d7)
           fixed: …
v0.1.0     2026-10-10
           Hello world 👋
```

- `CHANGELOG.md` is embedded at build time by a small root package (`changelog.go`, `package lazysecrets`, `//go:embed`), so it needs no network and matches the binary. `release.sh` updates the file before tagging, so a release's binary includes its own entry. `go install …@latest` gets it too, since the module includes the file.
- Entries show as text: links become `(#11) (65dc2d7)` (`update.PlainLinks`, shared with the `U` notes). `/` filters them like any Fields pane (`/fixed`, `/search`), and `y` copies one.
- `cliff.toml`: #11 was squash-merged with #10 (the status pane) in it, so a preprocessor rewrites its entry to name both. Otherwise the status pane would be missing from the changelog.

Test for the parsing: versions and dates, kinds, links as text, a release's own words, and the header and footer left out.

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

---------

Co-authored-by: Karl-Einar Bergstrøm <karl-einarb@outlook.com>
Reviewed-on: #12

internal/ui/app/status.go

@@ -65,8 +65,17 @@ func (m Model) statusFields() []panes.Field {
 			out = append(out, f)
 		}
 	}
-	add(panes.Field{Label: "version", Value: cmpOr(m.versionLabel(), "dev")})
-	add(panes.Field{Label: "update", Value: m.updateStatus(), Info: m.newer == nil})
+	// A release's rows open its release page.
+	version := panes.Field{Label: "version", Value: cmpOr(m.versionLabel(), "dev")}
+	if strings.HasPrefix(version.Value, "v") {
+		version.URL = update.DefaultRepo + "/releases/tag/" + version.Value
+	}
+	add(version)
+	upd := panes.Field{Label: "update", Value: m.updateStatus(), Info: m.newer == nil}
+	if m.newer != nil {
+		upd.URL = update.DefaultRepo + "/releases/tag/" + m.newer.Tag
+	}
+	add(upd)
 	add(panes.Field{Label: "license", Value: "GPL-3.0-or-later · © 2026 Karl-Einar Bergstrøm", Info: true})
 
 	for i, p := range m.providers {
@@ -94,7 +103,9 @@ func (m Model) statusFields() []panes.Field {
 	add(panes.Field{Label: "docs", Value: repo + "/…/docs", URL: update.DefaultRepo + "/src/branch/main/docs"})
 	add(panes.Field{Label: "source", Value: repo, URL: update.DefaultRepo})
 	add(panes.Field{Label: "issues", Value: repo + "/issues", URL: update.DefaultRepo + "/issues"})
-	return out
+	add(panes.Field{Label: "releases", Value: repo + "/releases", URL: update.DefaultRepo + "/releases"})
+	add(panes.Field{Label: "changelog", Value: repo + "/…/CHANGELOG.md", URL: update.DefaultRepo + "/src/branch/main/CHANGELOG.md"})
+	return append(out, m.changelog...)
 }
 
 // updateStatus says whether a newer release is out, and when it was
@@ -141,3 +152,31 @@ func ago(d time.Duration) string {
 	}
 	return fmt.Sprintf("%dd ago", int(d.Hours()/24))
 }
+
+// changelogFields are CHANGELOG.md as rows: each release's version and
+// date, then its entries, marked by what kind they are.
+func changelogFields(md string) []panes.Field {
+	var out []panes.Field
+	kind := ""
+	for _, line := range strings.Split(md, "\n") {
+		line = strings.TrimSpace(line)
+		switch {
+		case strings.HasPrefix(line, "## "):
+			version, date, _ := strings.Cut(strings.TrimPrefix(line, "## "), " – ")
+			out = append(out, panes.Field{Label: version, Value: date, Info: true})
+			kind = ""
+		case strings.HasPrefix(line, "### "):
+			kind = strings.ToLower(strings.TrimPrefix(line, "### "))
+		case strings.HasPrefix(line, "- ") && len(out) > 0:
+			text := update.PlainLinks(strings.TrimPrefix(line, "- "))
+			if kind != "" {
+				text = kind + ": " + text
+			}
+			out = append(out, panes.Field{Value: text})
+		case line != "" && len(out) > 0 && !strings.HasPrefix(line, "<!--"):
+			// A release's own words ("Hello world 👋").
+			out = append(out, panes.Field{Value: update.PlainLinks(line)})
+		}
+	}
+	return out
+}