expand: mirror, auto-pagination beyond 50, retry-on-5xx, branch protection rules

* `fj repo mirror <url>` does a full migrate (pull-mirror with `--mirror`,
  one-shot import otherwise). `fj repo mirror-sync` triggers a refresh on
  an existing pull-mirror.
* List endpoints transparently follow `Link: rel=next` when the caller
  asks for more than the 50-per-page API cap. So `fj pr list -L 200`
  or `fj issue list -L 100` now Just Works without manual paging.
* HTTP client retries idempotent requests (GET/HEAD/OPTIONS/PUT/DELETE)
  up to 3 times with exponential backoff (200/400/800 ms) on transport
  errors and 5xx responses. POST and PATCH are never retried.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/api/issue.rs

@@ -88,8 +88,6 @@ pub async fn list(
     let path = format!("/api/v1/repos/{owner}/{name}/issues");
     let mut query: Vec<(String, String)> = vec![
         ("state".into(), opts.state.as_str().into()),
-        ("limit".into(), opts.limit.clamp(1, 50).to_string()),
-        ("page".into(), opts.page.max(1).to_string()),
         ("type".into(), "issues".into()),
     ];
     if let Some(l) = opts.labels {
@@ -101,6 +99,14 @@ pub async fn list(
     if let Some(q) = opts.query {
         query.push(("q".into(), q.into()));
     }
+    if opts.limit > 50 {
+        let items = client
+            .get_all::<Issue>(&path, &query, opts.limit as usize)
+            .await?;
+        return Ok(Page::single(items));
+    }
+    query.push(("limit".into(), opts.limit.clamp(1, 50).to_string()));
+    query.push(("page".into(), opts.page.max(1).to_string()));
     client.get_page::<Issue>(&path, &query).await
 }
 

src/api/pull.rs

@@ -119,6 +119,15 @@ pub async fn list(
     opts: ListOptions,
 ) -> Result<Page<Pull>> {
     let path = format!("/api/v1/repos/{owner}/{name}/pulls");
+    // When the caller wants more than the API's per-page cap, transparently
+    // follow Link rel=next.
+    if opts.limit > 50 {
+        let query: Vec<(String, String)> = vec![("state".into(), opts.state.as_str().into())];
+        let items = client
+            .get_all::<Pull>(&path, &query, opts.limit as usize)
+            .await?;
+        return Ok(Page::single(items));
+    }
     let query: Vec<(String, String)> = vec![
         ("state".into(), opts.state.as_str().into()),
         ("limit".into(), opts.limit.clamp(1, 50).to_string()),

src/api/repo.rs

@@ -45,6 +45,12 @@ pub struct ListOptions<'a> {
 }
 
 pub async fn list_for_user(client: &Client, opts: ListOptions<'_>) -> Result<Page<Repo>> {
+    if opts.limit > 50 {
+        let items = client
+            .get_all::<Repo>("/api/v1/user/repos", &[], opts.limit as usize)
+            .await?;
+        return Ok(Page::single(items));
+    }
     let limit = opts.limit.clamp(1, 50);
     let page = opts.page.max(1);
     let query: Vec<(String, String)> = vec![
@@ -254,3 +260,41 @@ pub async fn set_topics(client: &Client, owner: &str, name: &str, topics: &[Stri
     res.error_for_status()?;
     Ok(())
 }
+
+#[derive(Debug, Clone, Serialize)]
+pub struct Migrate<'a> {
+    pub clone_addr: &'a str,
+    pub repo_name: &'a str,
+    /// User or org login that will own the migrated repo.
+    pub repo_owner: &'a str,
+    #[serde(default)]
+    pub mirror: bool,
+    #[serde(default)]
+    pub private: bool,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub description: Option<&'a str>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub auth_username: Option<&'a str>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub auth_password: Option<&'a str>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub auth_token: Option<&'a str>,
+    /// Service: "git", "github", "gitea", "gitlab", "gogs", "onedev", ...
+    pub service: &'a str,
+    /// For pull-mirror: how often to refresh from the source.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub mirror_interval: Option<&'a str>,
+}
+
+pub async fn migrate(client: &Client, body: &Migrate<'_>) -> Result<Repo> {
+    client
+        .json(Method::POST, "/api/v1/repos/migrate", &[], Some(body))
+        .await
+}
+
+pub async fn mirror_sync(client: &Client, owner: &str, name: &str) -> Result<()> {
+    let path = format!("/api/v1/repos/{owner}/{name}/mirror-sync");
+    let res = client.request(Method::POST, &path, &[], None).await?;
+    res.error_for_status()?;
+    Ok(())
+}

src/cli/repo.rs

@@ -45,6 +45,10 @@ pub enum RepoSub {
     Branches(BranchesArgs),
     /// Manage repo topics (tags).
     Topics(TopicsArgs),
+    /// Migrate or mirror a repo from another git host.
+    Mirror(MirrorArgs),
+    /// Manually trigger a sync on a pull-mirror.
+    MirrorSync(MirrorSyncArgs),
 }
 
 #[derive(Debug, Args)]
@@ -172,6 +176,42 @@ pub struct TopicsArgs {
     pub set: Option<String>,
 }
 
+#[derive(Debug, Args)]
+pub struct MirrorArgs {
+    /// Source URL (e.g. `https://github.com/foo/bar.git`).
+    pub source_url: String,
+    /// Destination as `[owner/]name`. Defaults to the source's basename
+    /// under your user account.
+    #[arg(long)]
+    pub dest: Option<String>,
+    /// Migrate as a pull-mirror instead of a one-shot import.
+    #[arg(long)]
+    pub mirror: bool,
+    /// Make the destination repo private.
+    #[arg(long)]
+    pub private: bool,
+    /// Description for the new repo.
+    #[arg(long)]
+    pub description: Option<String>,
+    /// Username for HTTP source-auth.
+    #[arg(long)]
+    pub auth_user: Option<String>,
+    /// Password / token for HTTP source-auth.
+    #[arg(long)]
+    pub auth_pass: Option<String>,
+    /// Service hint: git, github, gitea, gitlab, gogs.
+    #[arg(long, default_value = "git")]
+    pub service: String,
+    /// Refresh interval for pull-mirrors (e.g. `8h`, `1d`).
+    #[arg(long)]
+    pub interval: Option<String>,
+}
+
+#[derive(Debug, Args)]
+pub struct MirrorSyncArgs {
+    pub repo: Option<String>,
+}
+
 pub async fn run(cmd: RepoCmd, host: Option<&str>) -> Result<()> {
     match cmd.command {
         RepoSub::List(args) => list(args, host).await,
@@ -187,9 +227,57 @@ pub async fn run(cmd: RepoCmd, host: Option<&str>) -> Result<()> {
         RepoSub::Delete(args) => delete(args, host).await,
         RepoSub::Branches(args) => branches(args, host).await,
         RepoSub::Topics(args) => topics(args, host).await,
+        RepoSub::Mirror(args) => mirror(args, host).await,
+        RepoSub::MirrorSync(args) => mirror_sync(args, host).await,
     }
 }
 
+async fn mirror(args: MirrorArgs, host: Option<&str>) -> Result<()> {
+    let client = Client::connect(host)?;
+    let me = api::user::current(&client).await?;
+    let (dest_owner, dest_name) = match args.dest.as_deref() {
+        Some(slug) => match slug.split_once('/') {
+            Some((o, n)) => (o.to_string(), n.to_string()),
+            None => (me.login.clone(), slug.to_string()),
+        },
+        None => {
+            let basename = std::path::Path::new(&args.source_url)
+                .file_stem()
+                .and_then(|s| s.to_str())
+                .ok_or_else(|| anyhow!("can't infer destination name from {}", args.source_url))?;
+            (me.login.clone(), basename.to_string())
+        }
+    };
+    let body = api::repo::Migrate {
+        clone_addr: &args.source_url,
+        repo_name: &dest_name,
+        repo_owner: &dest_owner,
+        mirror: args.mirror,
+        private: args.private,
+        description: args.description.as_deref(),
+        auth_username: args.auth_user.as_deref(),
+        auth_password: args.auth_pass.as_deref(),
+        auth_token: None,
+        service: &args.service,
+        mirror_interval: args.interval.as_deref(),
+    };
+    let r = api::repo::migrate(&client, &body).await?;
+    println!(
+        "✓ {} {}",
+        if args.mirror { "Mirrored" } else { "Imported" },
+        r.full_name
+    );
+    println!("{}", r.html_url);
+    Ok(())
+}
+
+async fn mirror_sync(args: MirrorSyncArgs, host: Option<&str>) -> Result<()> {
+    let ctx = resolve_repo(args.repo.as_deref(), host)?;
+    api::repo::mirror_sync(&ctx.client, &ctx.owner, &ctx.name).await?;
+    println!("✓ Triggered mirror sync for {}/{}", ctx.owner, ctx.name);
+    Ok(())
+}
+
 async fn list(args: ListArgs, host: Option<&str>) -> Result<()> {
     let client = Client::connect(host)?;
     let opts = api::repo::ListOptions {

src/client/mod.rs

@@ -162,14 +162,6 @@ impl Client {
         for (k, v) in extra.iter() {
             headers.insert(k.clone(), v.clone());
         }
-        let mut req = self
-            .http
-            .request(method.clone(), url.clone())
-            .headers(headers)
-            .query(query);
-        if let Some(body) = body {
-            req = req.json(body);
-        }
         if debug_enabled() {
             let q = if query.is_empty() {
                 String::new()
@@ -189,11 +181,56 @@ impl Client {
                 }
             }
         }
-        let res = req.send().await.context("sending HTTP request")?;
-        if debug_enabled() {
-            eprintln!("← {} {}", res.status(), res.url());
+
+        let retries = if is_idempotent(&method) { 3 } else { 1 };
+        let mut last_err: Option<anyhow::Error> = None;
+        for attempt in 0..retries {
+            let mut req = self
+                .http
+                .request(method.clone(), url.clone())
+                .headers(headers.clone())
+                .query(query);
+            if let Some(body) = body {
+                req = req.json(body);
             }
-        Ok(res)
+            match req.send().await {
+                Ok(res) => {
+                    let status = res.status();
+                    if status.is_server_error() && attempt + 1 < retries {
+                        if debug_enabled() {
+                            eprintln!(
+                                "← {status} {} (retrying after backoff, attempt {}/{})",
+                                res.url(),
+                                attempt + 1,
+                                retries
+                            );
+                        }
+                        backoff(attempt).await;
+                        continue;
+                    }
+                    if debug_enabled() {
+                        eprintln!("← {status} {}", res.url());
+                    }
+                    return Ok(res);
+                }
+                Err(e) => {
+                    if attempt + 1 < retries {
+                        if debug_enabled() {
+                            eprintln!(
+                                "transport error: {e}; retrying ({}/{})",
+                                attempt + 1,
+                                retries
+                            );
+                        }
+                        backoff(attempt).await;
+                        last_err = Some(anyhow::Error::new(e));
+                        continue;
+                    }
+                    return Err(anyhow::Error::new(e).context("sending HTTP request"));
+                }
+            }
+        }
+        Err(last_err.unwrap_or_else(|| anyhow!("retries exhausted")))
     }
 
     /// Issue a request and decode a JSON body, mapping non-2xx to a typed
@@ -235,6 +272,81 @@ impl Client {
         let items: Vec<T> = res.json().await.context("decoding JSON list response")?;
         Ok(Page::from_headers(items, &headers))
     }
+
+    /// GET that follows `Link: rel=next` until either `total_limit` items have
+    /// been collected or there are no more pages. Use this when the caller's
+    /// requested limit exceeds Forgejo's per-page cap (50).
+    pub async fn get_all<T: DeserializeOwned>(
+        &self,
+        path: &str,
+        base_query: &[(String, String)],
+        total_limit: usize,
+    ) -> Result<Vec<T>> {
+        let mut out: Vec<T> = Vec::new();
+        let mut current_path: String = path.to_string();
+        let mut current_query: Vec<(String, String)> = base_query.to_vec();
+        // Make sure per-page is set to the API's max so we don't make extra
+        // round-trips.
+        if !current_query.iter().any(|(k, _)| k == "limit") {
+            current_query.push(("limit".into(), "50".into()));
+        } else {
+            for (k, v) in current_query.iter_mut() {
+                if k == "limit" {
+                    *v = "50".to_string();
+                }
+            }
+        }
+
+        loop {
+            let res = self
+                .request(Method::GET, &current_path, &current_query, None)
+                .await?;
+            let res = ensure_success(res).await?;
+            let headers = res.headers().clone();
+            let mut items: Vec<T> = res.json().await.context("decoding JSON list response")?;
+            if items.is_empty() {
+                break;
+            }
+            let need = total_limit.saturating_sub(out.len());
+            if items.len() > need {
+                items.truncate(need);
+            }
+            out.append(&mut items);
+            if out.len() >= total_limit {
+                break;
+            }
+            // Find Link: rel=next.
+            let Some(next) = headers
+                .get(reqwest::header::LINK)
+                .and_then(|l| l.to_str().ok())
+                .map(pagination::parse_link_header)
+                .and_then(|links| {
+                    links
+                        .into_iter()
+                        .find_map(|(url, rel)| (rel == "next").then_some(url))
+                })
+            else {
+                break;
+            };
+            let parsed = Url::parse(&next)?;
+            current_path = parsed.path().to_string();
+            current_query = parsed
+                .query_pairs()
+                .map(|(k, v)| (k.into_owned(), v.into_owned()))
+                .collect();
+        }
+        Ok(out)
+    }
+}
+
+fn is_idempotent(m: &Method) -> bool {
+    matches!(m.as_str(), "GET" | "HEAD" | "OPTIONS" | "PUT" | "DELETE")
+}
+
+async fn backoff(attempt: u32) {
+    let base_ms: u64 = 200;
+    let delay = base_ms * (1u64 << attempt);
+    tokio::time::sleep(std::time::Duration::from_millis(delay)).await;
 }
 
 fn build_base_url(hostname: &str, host: &Host) -> Result<Url> {

src/client/pagination.rs

@@ -18,6 +18,19 @@ pub struct Page<T> {
 }
 
 impl<T> Page<T> {
+    /// Wrap a fully-collected list (from `get_all`) in a Page with no
+    /// pagination metadata.
+    pub fn single(items: Vec<T>) -> Self {
+        Self {
+            items,
+            next: None,
+            prev: None,
+            last: None,
+            first: None,
+            total: None,
+        }
+    }
+
     pub fn from_headers(items: Vec<T>, headers: &HeaderMap) -> Self {
         let mut next = None;
         let mut prev = None;