feat: l for details; details for vaults, scopes and files; getting started; the age of cached lists (#17)

- `l` goes to the details of what is selected; `enter` still drills in
- vaults, scopes and files show their details (vault settings from the listing, no extra requests)
- with nothing to show, the right pane says how to get started
- a list from the cache says how old it is while it reloads
- what is expiring, in the status pane and `lazysecrets expiring`
- when access is refused, what to check, for Azure and Databricks
- no group list in an account's details, and no Microsoft Graph call for it

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

internal/provider/repo/details.go

@@ -0,0 +1,62 @@
+package repo
+
+import (
+	"context"
+	"os/exec"
+	"path/filepath"
+	"strings"
+
+	"git.kebcloud.no/keb/lazysecrets/internal/provider"
+)
+
+// Details are how a file is encrypted and for whom, and what git knows of
+// it: a plain .env file that git tracks, or could, is marked.
+func (p *Provider) Details(ctx context.Context, c provider.Container) ([]provider.Attr, error) {
+	r, ok := p.repo(c.Source.ID)
+	if !ok {
+		return nil, provider.ErrUnsupported
+	}
+	rel, err := filepath.Rel(r.root, c.ID)
+	if err != nil {
+		return nil, err
+	}
+	var out []provider.Attr
+	meta, isSops := readMeta(c.ID)
+	if isSops {
+		out = append(out, provider.Attr{Label: "encryption", Value: "sops · " + strings.Join(meta.methods, ", ")})
+		for i, k := range meta.recipients {
+			label := ""
+			if i == 0 {
+				label = "keys"
+			}
+			out = append(out, provider.Attr{Label: label, Value: k})
+		}
+		if !meta.modified.IsZero() {
+			out = append(out, provider.Attr{Label: "encrypted", Value: meta.modified.Local().Format("2006-01-02 15:04")})
+		}
+	} else {
+		out = append(out, provider.Attr{Label: "encryption", Value: "none: plain text"})
+	}
+
+	git := func(args ...string) (string, bool) {
+		b, err := exec.CommandContext(ctx, "git", append([]string{"-C", r.root}, args...)...).Output()
+		return strings.TrimSpace(string(b)), err == nil
+	}
+	switch _, tracked := git("ls-files", "--error-unmatch", "--", rel); {
+	case tracked && !isSops:
+		out = append(out, provider.Attr{Label: "git", Value: "tracked: its values are in the repo's history", Warn: true})
+	case tracked:
+		out = append(out, provider.Attr{Label: "git", Value: "tracked"})
+	default:
+		if _, ignored := git("check-ignore", "-q", "--", rel); ignored {
+			out = append(out, provider.Attr{Label: "git", Value: "ignored"})
+		} else {
+			out = append(out, provider.Attr{Label: "git", Value: "untracked and not ignored: easy to commit by mistake", Warn: !isSops})
+		}
+		return out, nil
+	}
+	if last, ok := git("log", "-1", "--format=%h · %ar · %an: %s", "--", rel); ok && last != "" {
+		out = append(out, provider.Attr{Label: "last commit", Value: last})
+	}
+	return out, nil
+}