hive-forge: make --json a global flag (closes #421)

hive-forge/src/client.rs

@@ -26,14 +26,19 @@ pub struct Client {
     /// Default repo used when a verb doesn't carry an explicit
     /// `[repo]` override.
     pub default_repo: String,
+    /// Global `--json` flag — verbs that have a human-readable
+    /// default path branch on `client.json_mode()` to pick the
+    /// JSON output shape instead. Closes #421.
+    json_mode: bool,
 }
 
 impl Client {
     /// Build a client from the standard environment variables.
     /// `repo_override` (from the global `-r/--repo` flag) takes
     /// priority over `HIVE_FORGE_REPO`; the env var is the fallback
-    /// default.
-    pub fn from_env(repo_override: Option<String>) -> Result<Self> {
+    /// default. `json_mode` comes from the global `--json` flag —
+    /// per-verb output formatters key off it via `Client::json_mode`.
+    pub fn from_env(repo_override: Option<String>, json_mode: bool) -> Result<Self> {
         let base = std::env::var("HIVE_FORGE_URL").unwrap_or_else(|_| DEFAULT_URL.to_owned());
         let default_repo = repo_override
             .or_else(|| std::env::var("HIVE_FORGE_REPO").ok())
@@ -55,9 +60,19 @@ impl Client {
             http,
             base,
             default_repo,
+            json_mode,
         })
     }
 
+    /// True when the operator passed the global `--json` flag.
+    /// Verbs that have a human-readable default branch on this to
+    /// emit JSON instead. Verbs whose only output format is JSON
+    /// (e.g. `issue`, `pr`) can ignore it.
+    #[must_use]
+    pub fn json_mode(&self) -> bool {
+        self.json_mode
+    }
+
     /// Resolve the API base path (`<base>/api/v1`).
     fn api(&self) -> String {
         format!("{}/api/v1", self.base)