add `ngit repo` subcommand group

- `ngit repo` (no subcommand): show repository info including maintainer
  tree, per-maintainer infrastructure attribution, and a note explaining
  the union-vs-personal field model and recursive maintainer sets
- `ngit repo init`: alias for `ngit init`
- `ngit repo edit`: same as init but signals intent to update an existing
  repository announcement
- `ngit repo accept`: scoped command for co-maintainers to publish their
  announcement; errors with clear messages for all other states (trusted
  maintainer, already accepted, not invited, no repo found)

1 files changed, 29 insertions, 0 deletions

diff --git a/src/bin/ngit/cli.rs b/src/bin/ngit/cli.rs
index 037d17f..fa5d906 100644
--- a/src/bin/ngit/cli.rs
+++ b/src/bin/ngit/cli.rs
@@ -106,6 +106,11 @@ pub enum Commands {
     /// publish a repository to nostr; signal you are its maintainer accepting
     /// PRs and issues
     Init(sub_commands::init::SubCommandArgs),
+    /// manage repository metadata and maintainership
+    #[command(
+        long_about = "manage repository metadata and maintainership\n\nrun without a subcommand to show repository info"
+    )]
+    Repo(RepoSubCommandArgs),
     /// submit PR with advanced options
     #[command(
         long_about = "submit PR with advanced options\n\nfor a simpler flow, push a branch with the `pr/` prefix using native git:\n  git push -o 'title=My PR' -o 'description=details here' -u origin pr/my-branch"
@@ -177,3 +182,27 @@ pub struct AccountSubCommandArgs {
     #[command(subcommand)]
     pub account_command: AccountCommands,
 }
+
+#[derive(clap::Parser)]
+pub struct RepoSubCommandArgs {
+    #[command(subcommand)]
+    pub repo_command: Option<RepoCommands>,
+}
+
+#[derive(Subcommand)]
+pub enum RepoCommands {
+    /// publish a repository to nostr (alias for `ngit init`)
+    Init(sub_commands::init::SubCommandArgs),
+    /// update repository metadata on nostr
+    #[command(
+        long_about = "update repository metadata on nostr\n\nlike `ngit init` but makes clear you are editing an existing repository"
+    )]
+    Edit(sub_commands::init::SubCommandArgs),
+    /// accept an invitation to co-maintain a repository
+    #[command(long_about = "accept an invitation to co-maintain a repository\n\n\
+            publishes your repository announcement to nostr, confirming your co-maintainership.\n\n\
+            This is required because your signed announcement is what ties your git state events\n\
+            to a specific repository coordinate chain, preventing scammers from attributing your\n\
+            commits to a fake repository. See `ngit repo info` for details on the maintainer model.")]
+    Accept(sub_commands::repo::accept::SubCommandArgs),
+}