feat: e opens a repo's SOPS or .env file, in nvim, sops edit or your editor

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

docs/repos.md

@@ -63,6 +63,22 @@ 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.
 
+## Opening files
+
+`e` opens the selected file, or on a secret, its file at that key's line:
+
+- **SOPS files** open with `sops edit`, which decrypts them into your
+  editor (`$SOPS_EDITOR` or `$EDITOR`) and encrypts them again when you
+  save. lazysecrets comes back after, with the file's keys reloaded.
+- **Other files**, when lazysecrets runs inside nvim (its plugin, or
+  `:terminal`): lazysecrets quits and the file opens in that nvim, in the
+  window you came from.
+- Otherwise in `$VISUAL` or `$EDITOR` in the terminal, coming back after;
+  without either, in the system's default app for the file.
+
+Editors that take a line (vim, nvim, nano, emacs, micro, helix, VS Code,
+Zed, Sublime and others) start on the key.
+
 ## Links
 
 Links name the repo by its git remote, so they open in a colleague's clone