fix(migrate): validate source refs and expansions

packages/migrate/src/sources/conductor/inspect.test.ts

@@ -118,6 +118,41 @@ test("does not adopt an existing worktree on a different branch", () => {
   });
 });
 
+test("does not recreate a missing workspace from a tag", () => {
+  const repo = createRepository("tag-only-workspace", null);
+  execFileSync("git", ["commit", "--allow-empty", "-m", "initial"], {
+    cwd: repo,
+    env: {
+      ...process.env,
+      GIT_AUTHOR_NAME: "Paseo Test",
+      GIT_AUTHOR_EMAIL: "test@paseo.local",
+      GIT_COMMITTER_NAME: "Paseo Test",
+      GIT_COMMITTER_EMAIL: "test@paseo.local",
+    },
+  });
+  execFileSync("git", ["tag", "release"], { cwd: repo });
+
+  const inspected = inspectCatalog({
+    repos: [repoRecord("repo", repo)],
+    workspaces: [
+      {
+        id: "workspace-tag-only",
+        repoId: "repo",
+        branch: "release",
+        state: "ready",
+        path: null,
+        archiveCommit: null,
+      },
+    ],
+  });
+
+  expect(inspected.projects[0]?.workspaces[0]).toMatchObject({
+    sourceId: "workspace-tag-only",
+    disposition: "missing-ref",
+    notices: [{ code: "missing-workspace-ref" }],
+  });
+});
+
 function createRepository(name: string, settings: string | null): string {
   const repo = mkdtempSync(path.join(os.tmpdir(), `paseo-inspect-${name}-`));
   cleanup.push(repo);

packages/migrate/src/sources/conductor/inspect.ts

@@ -134,7 +134,7 @@ function inspectWorkspace(
     };
   }
 
-  if (workspace.branch && refExists(repo.rootPath, workspace.branch)) {
+  if (workspace.branch && localBranchExists(repo.rootPath, workspace.branch)) {
     return {
       sourceId: workspace.id,
       state: "ready",
@@ -209,6 +209,17 @@ function refExists(rootPath: string, ref: string): boolean {
   }
 }
 
+function localBranchExists(rootPath: string, branch: string): boolean {
+  const branchName = branch.replace(/^refs\/heads\//, "");
+  if (!branchName) return false;
+  try {
+    git(rootPath, ["show-ref", "--verify", "--quiet", `refs/heads/${branchName}`]);
+    return true;
+  } catch {
+    return false;
+  }
+}
+
 function safeDirectoryName(workspace: ConductorWorkspaceRecord): string {
   const candidate = workspace.path ? path.basename(workspace.path.replaceAll("\\", "/")) : "";
   if (/^[A-Za-z0-9][A-Za-z0-9._-]*$/.test(candidate) && candidate !== "." && candidate !== "..") {

packages/migrate/src/sources/conductor/project-config.test.ts

@@ -161,6 +161,7 @@ test("preserves literal or escaped Conductor names and rewrites active variables
         arithmeticDirect: { command: "serve --port $(( $CONDUCTOR_PORT ))" },
         arithmeticBraced: { command: "serve --port $(( ${CONDUCTOR_PORT} ))" },
         arithmeticOffset: { command: "serve --port $(( CONDUCTOR_PORT + 1 ))" },
+        prefixExpansion: { command: "serve --length ${#CONDUCTOR_PORT}" },
       },
     },
   });
@@ -187,6 +188,12 @@ test("preserves literal or escaped Conductor names and rewrites active variables
     message:
       "scripts.arithmeticOffset.port_arithmetic: Conductor port arithmetic is not imported because Paseo reserves one service port.",
   });
+  expect(inspected.notices).toContainEqual({
+    code: "conductor-setting-unsupported",
+    level: "warning",
+    message:
+      "scripts.prefixExpansion: Unsupported Conductor variables: CONDUCTOR_PORT. Command was not imported.",
+  });
 });
 
 test("skips cwd scripts on Windows instead of emitting POSIX shell syntax", () => {

packages/migrate/src/sources/conductor/project-config.ts

@@ -613,7 +613,7 @@ function collectConductorVariables(command: string): string[] {
   const names = new Set<string>();
   const mask = activeShellMask(command);
   const direct =
-    /\$\{(CONDUCTOR_[A-Za-z0-9_]+)(?=[^A-Za-z0-9_])|\$(CONDUCTOR_[A-Za-z0-9_]+)(?![A-Za-z0-9_])/g;
+    /\$\{[#!]?(CONDUCTOR_[A-Za-z0-9_]+)(?=[^A-Za-z0-9_])|\$(CONDUCTOR_[A-Za-z0-9_]+)(?![A-Za-z0-9_])/g;
   for (const match of command.matchAll(direct)) {
     if (mask[match.index] !== "$") continue;
     const name = match[1] ?? match[2];