feat: open in browser — o shortcut to open the focused result's GitHub URL

docs/reference/keyboard-shortcuts.md

@@ -21,6 +21,7 @@ Section header rows (shown when `--group-by-team-prefix` is active) are skipped
 | `Space` | Toggle selection on the current repo or extract. On a repo row: cascades to all its extracts.                                                              |
 | `a`     | Select **all**. On a repo row: selects all repos and their extracts. On an extract row: selects all extracts in the current repo. Respects active filters. |
 | `n`     | Select **none**. Same context rules as `a`. Respects active filters.                                                                                       |
+| `o`     | **Open in browser** — opens the focused item in the default browser. On a repo row: opens the repository page. On an extract row: opens the file directly. |
 
 ## Filtering
 

src/render.test.ts

@@ -909,6 +909,12 @@ describe("renderHelpOverlay", () => {
     expect(stripped).toContain("fold / unfold all repos");
   });
 
+  it("documents the o open-in-browser shortcut", () => {
+    const out = renderHelpOverlay();
+    const stripped = out.replace(/\x1b\[[0-9;]*m/g, "");
+    expect(stripped).toContain("open in browser");
+  });
+
   it("is returned by renderGroups when showHelp=true", () => {
     const groups = [makeGroup("org/repo", ["a.ts"])];
     const rows = buildRows(groups);
@@ -975,12 +981,13 @@ describe("renderGroups filter opts", () => {
     expect(stripped).not.toContain("Filter:");
   });
 
-  it("status bar hint line includes Z fold-all shortcut", () => {
+  it("status bar hint line includes Z fold-all and o open shortcuts", () => {
     const groups = [makeGroup("org/repo", ["a.ts"])];
     const rows = buildRows(groups);
     const out = renderGroups(groups, 0, rows, 40, 0, "q", "org", {});
     const stripped = out.replace(/\x1b\[[0-9;]*m/g, "");
     expect(stripped).toContain("Z fold-all");
+    expect(stripped).toContain("o open");
   });
 
   it("shows mode badge [content] when filterTarget=content", () => {

src/render.ts

@@ -37,6 +37,7 @@ export function renderHelpOverlay(): string {
     `  ${pc.yellow("Space")}       toggle selection       ${pc.yellow("Enter")}       confirm & output`,
     `  ${pc.yellow("a")}           select all             ${pc.yellow("n")}           select none`,
     `                 ${pc.dim("(respects active filter)")}`,
+    `  ${pc.yellow("o")}           open in browser        ${pc.dim("(repo row → repo page, extract row → file)")}`,
     `  ${pc.yellow("f")}           enter filter mode      ${pc.yellow("r")}           reset filter`,
     `  ${pc.yellow("t")}           cycle filter target    ${pc.dim("(path → content → repo)")}`,
     `  ${pc.yellow("h")} / ${pc.yellow("?")}       toggle this help       ${pc.yellow("q")} / Ctrl+C  quit`,
@@ -298,7 +299,7 @@ export function renderGroups(
 
   lines.push(
     pc.dim(
-      "← / → fold/unfold  Z fold-all  ↑ / ↓ navigate  spc select  a all  n none  f filter  t target  h help  ↵ confirm  q quit\n",
+      "← / → fold/unfold  Z fold-all  ↑ / ↓ navigate  spc select  a all  n none  o open  f filter  t target  h help  ↵ confirm  q quit\n",
     ),
   );
 

src/tui.ts

@@ -62,6 +62,35 @@ function nextWordBoundary(s: string, pos: number): number {
   return i;
 }
 
+// ─── Browser helper ──────────────────────────────────────────────────────────
+
+/**
+ * Open a URL in the system default browser.
+ * macOS: `open`, Linux: `xdg-open`, Windows: `cmd /c start "" <url>`.
+ * Fire-and-forget with all stdio set to null so the TUI remains fully responsive.
+ */
+function openInBrowser(url: string): void {
+  let command: string;
+  let args: string[];
+
+  if (process.platform === "darwin") {
+    command = "open";
+    args = [url];
+  } else if (process.platform === "win32") {
+    // `start` is a cmd.exe built-in, not a standalone executable.
+    // The empty string is the mandatory window-title argument; without it,
+    // `start` mis-parses the URL as the title and may fail to open it.
+    command = "cmd";
+    args = ["/c", "start", "", url];
+  } else {
+    command = "xdg-open";
+    args = [url];
+  }
+
+  // Fire-and-forget: do not await, and set all stdio to null so the TUI stays responsive.
+  Bun.spawn([command, ...args], { stdout: null, stderr: null, stdin: null });
+}
+
 // ─── Interactive TUI ─────────────────────────────────────────────────────────
 
 export async function runInteractive(
@@ -435,6 +464,19 @@ export async function runInteractive(
       applySelectNone(groups, row, filterPath, filterTarget, filterRegex);
     }
 
+    // `o` — open focused result (or repo) in the default browser
+    if (key === "o" && row && row.type !== "section") {
+      let url: string;
+      if (row.type === "repo") {
+        // Open the repository page on GitHub
+        url = `https://github.com/${groups[row.repoIndex].repoFullName}`;
+      } else {
+        // Open the specific file at the matching line
+        url = groups[row.repoIndex].matches[row.extractIndex!].htmlUrl;
+      }
+      openInBrowser(url);
+    }
+
     redraw();
   }
 }