fix(init): preserve inside=true on root lookup failures

.changeset/3491-nested-git-detection.md

@@ -1,5 +1,5 @@
 ---
 type: Fixed
-pr: 3491
+pr: 3502
 ---
 **`/gsd-new-project` and `/gsd-ingest-docs` no longer create a nested `.git` inside an existing worktree (#3491)** — the shallow `has_git: false` check (which only looked for `.git` in the current directory) has been replaced with `git rev-parse --is-inside-work-tree` semantics. The init payload now surfaces `git_worktree_root` and `in_nested_subdir` so the workflows correctly skip `git init` when invoked from a subdirectory of an existing repo and warn that planning files will be tracked by the outer repo.

sdk/src/query/init-complex.ts

@@ -82,14 +82,18 @@ function gitWorktreeInfo(base: string): { inside: boolean; worktreeRoot: string
       env: { ...process.env, GIT_TERMINAL_PROMPT: '0' },
     }).trim();
     if (inside !== 'true') return { inside: false, worktreeRoot: null };
-    const root = execSync('git rev-parse --show-toplevel', {
-      cwd: base,
-      stdio: ['ignore', 'pipe', 'ignore'],
-      encoding: 'utf-8',
-      timeout: 5000,
-      env: { ...process.env, GIT_TERMINAL_PROMPT: '0' },
-    }).trim();
-    return { inside: true, worktreeRoot: root || null };
+    try {
+      const root = execSync('git rev-parse --show-toplevel', {
+        cwd: base,
+        stdio: ['ignore', 'pipe', 'ignore'],
+        encoding: 'utf-8',
+        timeout: 5000,
+        env: { ...process.env, GIT_TERMINAL_PROMPT: '0' },
+      }).trim();
+      return { inside: true, worktreeRoot: root || null };
+    } catch {
+      return { inside: true, worktreeRoot: null };
+    }
   } catch {
     return { inside: false, worktreeRoot: null };
   }

sdk/src/query/init.ts

@@ -98,14 +98,18 @@ function gitWorktreeInfo(base: string): { inside: boolean; worktreeRoot: string
       env: { ...process.env, GIT_TERMINAL_PROMPT: '0' },
     }).trim();
     if (inside !== 'true') return { inside: false, worktreeRoot: null };
-    const root = execSync('git rev-parse --show-toplevel', {
-      cwd: base,
-      stdio: ['ignore', 'pipe', 'ignore'],
-      encoding: 'utf-8',
-      timeout: 5000,
-      env: { ...process.env, GIT_TERMINAL_PROMPT: '0' },
-    }).trim();
-    return { inside: true, worktreeRoot: root || null };
+    try {
+      const root = execSync('git rev-parse --show-toplevel', {
+        cwd: base,
+        stdio: ['ignore', 'pipe', 'ignore'],
+        encoding: 'utf-8',
+        timeout: 5000,
+        env: { ...process.env, GIT_TERMINAL_PROMPT: '0' },
+      }).trim();
+      return { inside: true, worktreeRoot: root || null };
+    } catch {
+      return { inside: true, worktreeRoot: null };
+    }
   } catch {
     return { inside: false, worktreeRoot: null };
   }