fix(init): don't block on confirmation for 'init --here' without a TTY

src/specify_cli/commands/init.py

@@ -220,16 +220,45 @@ def init(
                 console.print(
                     f"[yellow]Warning:[/yellow] Current directory is not empty ({len(existing_items)} items)"
                 )
-                console.print(
-                    "[yellow]Template files will be merged with existing content and may overwrite existing files[/yellow]"
-                )
                 if force:
+                    # Proceeding: the merge/overwrite warning is accurate here.
+                    console.print(
+                        "[yellow]Template files will be merged with existing content and may overwrite existing files[/yellow]"
+                    )
                     console.print(
                         "[cyan]--force supplied: skipping confirmation and proceeding with merge[/cyan]"
                     )
                 else:
-                    response = typer.confirm("Do you want to continue?")
-                    if not response:
+                    # Fold the merge risk into the confirmation prompt rather than
+                    # printing it unconditionally first: on the EOF/no-input path
+                    # below the command exits without changing anything, so a
+                    # standalone "will be merged" line would mislead. Interactive
+                    # users still see the risk as part of the question.
+                    #
+                    # Call typer.confirm normally so piped y/n is honored — e.g.
+                    # `echo y | specify init --here` keeps reaching the
+                    # non-destructive preserve-merge path.
+                    try:
+                        proceed = typer.confirm(
+                            "Template files will be merged with existing content "
+                            "and may overwrite existing files. Do you want to continue?"
+                        )
+                    except (typer.Abort, EOFError):
+                        # typer.confirm raises Abort for BOTH an interactive Ctrl+C
+                        # and an EOF on closed/empty stdin. Distinguish them: a real
+                        # TTY cancellation is a normal exit (0, "cancelled"), while a
+                        # missing-input EOF (non-interactive) becomes an actionable
+                        # error pointing at --force.
+                        if _stdin_is_interactive():
+                            console.print("[yellow]Operation cancelled[/yellow]")
+                            raise typer.Exit(0) from None
+                        console.print(
+                            "[red]Error:[/red] Current directory is not empty and no "
+                            "confirmation input is available. Re-run with "
+                            "[bold]--force[/bold] to merge into it."
+                        )
+                        raise typer.Exit(1) from None
+                    if not proceed:
                         console.print("[yellow]Operation cancelled[/yellow]")
                         raise typer.Exit(0)
         else:

tests/integrations/test_cli.py

@@ -115,6 +115,63 @@ def fail_select(*_args, **_kwargs):
         data = json.loads((project / ".specify" / "integration.json").read_text(encoding="utf-8"))
         assert data["integration"] == specify_cli.DEFAULT_INIT_INTEGRATION
 
+    def test_init_here_nonempty_noninteractive_errors_with_force_guidance(self, tmp_path):
+        """`init --here` on a non-empty directory with no confirmation input (empty
+        stdin) must fail fast with guidance to use --force, instead of the bare
+        'Aborted.' from an EOF on typer.confirm. CliRunner with no `input=` provides
+        empty stdin, so typer.confirm raises Abort, which the command converts to the
+        actionable error."""
+        from typer.testing import CliRunner
+        from specify_cli import app
+
+        project = tmp_path / "nonempty-here"
+        project.mkdir()
+        (project / "existing.txt").write_text("keep me", encoding="utf-8")
+        old_cwd = os.getcwd()
+        try:
+            os.chdir(project)
+            result = CliRunner().invoke(app, [
+                "init", "--here", "--integration", "copilot", "--script", "sh", "--ignore-agent-tools",
+            ], catch_exceptions=False)
+        finally:
+            os.chdir(old_cwd)
+
+        assert result.exit_code == 1, result.output
+        assert "--force" in result.output
+        # Aborted before scaffolding: the pre-existing file is untouched.
+        assert (project / "existing.txt").read_text(encoding="utf-8") == "keep me"
+
+    def test_init_here_interactive_cancel_exits_zero(self, tmp_path, monkeypatch):
+        """An interactive Ctrl+C at the merge confirmation (typer.Abort on a TTY)
+        is a normal cancellation — exit 0, "cancelled" — NOT the missing-input
+        --force error, which is reserved for non-interactive EOF. Guards the
+        regression where Abort was caught unconditionally and every cancel became
+        an exit-1 --force error."""
+        from typer.testing import CliRunner
+        from specify_cli import app
+        import specify_cli.commands.init as init_mod
+
+        # Simulate an interactive terminal so the Abort is treated as a cancel.
+        monkeypatch.setattr(init_mod, "_stdin_is_interactive", lambda: True)
+
+        project = tmp_path / "cancel-here"
+        project.mkdir()
+        (project / "existing.txt").write_text("keep me", encoding="utf-8")
+        old_cwd = os.getcwd()
+        try:
+            os.chdir(project)
+            # No input → typer.confirm raises Abort (stands in for Ctrl+C).
+            result = CliRunner().invoke(app, [
+                "init", "--here", "--integration", "copilot", "--script", "sh", "--ignore-agent-tools",
+            ], catch_exceptions=False)
+        finally:
+            os.chdir(old_cwd)
+
+        assert result.exit_code == 0, result.output
+        assert "cancelled" in result.output.lower()
+        assert "--force" not in result.output  # not the missing-input error
+        assert (project / "existing.txt").read_text(encoding="utf-8") == "keep me"
+
     def test_integration_copilot_auto_promotes(self, tmp_path):
         from typer.testing import CliRunner
         from specify_cli import app
@@ -835,7 +892,8 @@ def test_init_here_force_overwrites_shared_infra(self, tmp_path):
         assert (scripts_dir / "common.sh").read_text(encoding="utf-8") != custom_content
 
     def test_init_here_without_force_preserves_shared_infra(self, tmp_path):
-        """E2E: specify init --here (no --force) preserves existing shared infra files."""
+        """E2E: confirming the merge with piped "y" (no --force) preserves
+        existing shared infra files (unlike --force, which overwrites them)."""
         from typer.testing import CliRunner
         from specify_cli import app