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>

docs/repos.md

@@ -63,6 +63,13 @@ copying or `lazysecrets get` decrypts one value with your `sops` binary, so
 whatever sops uses works (age keys, Azure Key Vault through az, AWS/GCP
 KMS, PGP). When sops can't decrypt, its whole error message is shown.
 
+On a file, the right pane shows how it's encrypted and the keys it's
+encrypted for (public: age recipients, Key Vault keys, KMS ARNs, PGP
+fingerprints), when it was last encrypted, and what git knows of it:
+tracked, ignored or neither, and its last commit. A plain `.env` file that
+git tracks, or that isn't ignored, is marked in red: its values are in the
+repo's history, or easily could be.
+
 ## Opening files
 
 `e` opens the selected file, or on a secret, its file at that key's line: