fix: fix bugs in core modules

- tty: fix isStdoutTTY to use fstat first, fall back to TERM heuristic
- git: fix commit regex to handle root-commit output format
- git: fix parseNameStatus to handle edge cases (empty lines, missing tabs)
- ai: fix readStream to cancel reader instead of releaseLock
- cli: remove dead code resolveFlagName function
- clipboard: fix inconsistent indentation

Co-Authored-By: Claude <noreply@anthropic.com>

src/ai.ts

@@ -123,7 +123,6 @@ async function readStream(body: ReadableStream<Uint8Array>, callbacks: StreamCal
 
       buffer += decoder.decode(value, { stream: true });
       const lines = buffer.split("\n");
-      // Keep the last potentially incomplete line
       buffer = lines.pop() ?? "";
 
       for (const line of lines) {
@@ -136,7 +135,12 @@ async function readStream(body: ReadableStream<Uint8Array>, callbacks: StreamCal
         try {
           const parsed = JSON.parse(data) as {
             choices?: Array<{ delta?: { content?: string }; finish_reason?: string }>;
+            error?: { message?: string };
           };
+          if (parsed.error) {
+            callbacks.onError?.(new Error(`Stream error: ${parsed.error.message ?? "unknown"}`));
+            continue;
+          }
           const token = parsed.choices?.[0]?.delta?.content;
           if (token) {
             fullText += token;
@@ -152,7 +156,8 @@ async function readStream(body: ReadableStream<Uint8Array>, callbacks: StreamCal
       }
     }
   } finally {
-    reader.releaseLock();
+    try { await reader.cancel(); } catch {}
+    // releaseLock is not needed after cancel
   }
 
   callbacks.onDone?.(fullText);

src/clipboard.ts

@@ -19,7 +19,9 @@ export async function copyToClipboard(text: string): Promise<boolean> {
 			proc.stdin.end();
 			const exitCode = await proc.exited;
 			if (exitCode === 0) return true;
-        } catch {}
+		} catch {
+			// Try next command
+		}
 	}
 
 	return false;

src/git.ts

@@ -37,12 +37,17 @@ function parseNameStatus(output: string): FileEntry[] {
   return output
     .trim()
     .split("\n")
-    .filter(Boolean)
+    .filter((line) => line.trim())
     .map((line) => {
-      const [status, ...pathParts] = line.split("\t");
-      const path = pathParts[pathParts.length - 1] ?? "";
-      return { path, status: status!, label: statusToLabel(status!) };
-    });
+      const tabIdx = line.indexOf("\t");
+      if (tabIdx === -1) return null;
+      const status = line.slice(0, tabIdx);
+      // Join path parts back (paths may contain escaped chars but not tabs)
+      const path = line.slice(tabIdx + 1);
+      if (!status || !path) return null;
+      return { path, status, label: statusToLabel(status) };
+    })
+    .filter((entry): entry is FileEntry => entry !== null);
 }
 
 export async function getStagedFiles(): Promise<FileEntry[]> {
@@ -140,7 +145,7 @@ export async function commit(
     throw new Error(stderr.trim() || `git commit failed (exit code ${exitCode})`);
   }
 
-  const branchHashMatch = stdout.match(/\[(\S+)\s+([0-9a-f]{7,})/);
+  const branchHashMatch = stdout.match(/\[(\S+)\s+(?:\(root-commit\)\s+)?([0-9a-f]{7,})/);
   const branch = branchHashMatch?.[1] ?? "";
   const hash = branchHashMatch?.[2] ?? "";
 

src/tty.ts

@@ -23,14 +23,13 @@ export function isStdinTTY(): boolean {
 }
 
 export function isStdoutTTY(): boolean {
-  // Use a heuristic for stdout — check if we're in a terminal
-  if (process.env.TERM || process.env.TERM_PROGRAM) return true;
-  if (process.env.NO_COLOR) return false;
-  // Try fstat on fd 1 (stdout)
+  // Primary check: fstat on fd 1 (stdout) — most reliable
   try {
     const stat = fstatSync(1);
     return stat.isCharacterDevice();
   } catch {
+    // Fall back to TERM heuristic only when fstat fails
+    if (process.env.TERM || process.env.TERM_PROGRAM) return true;
     return false;
   }
 }