fix(init): generate root CLAUDE.md for --ai claude

src/specify_cli/__init__.py

@@ -97,6 +97,11 @@ def _build_ai_assistant_help() -> str:
 CLAUDE_LOCAL_PATH = Path.home() / ".claude" / "local" / "claude"
 CLAUDE_NPM_LOCAL_PATH = Path.home() / ".claude" / "local" / "node_modules" / ".bin" / "claude"
 
+# Relative path (from project root) to the authoritative constitution file.
+# Shared by init-time scaffolding and integration-specific context-file
+# generation so the two cannot drift.
+CONSTITUTION_REL_PATH = Path(".specify") / "memory" / "constitution.md"
+
 BANNER = """
 ███████╗██████╗ ███████╗ ██████╗██╗███████╗██╗   ██╗
 ██╔════╝██╔══██╗██╔════╝██╔════╝██║██╔════╝╚██╗ ██╔╝
@@ -753,7 +758,7 @@ def ensure_executable_scripts(project_path: Path, tracker: StepTracker | None =
 
 def ensure_constitution_from_template(project_path: Path, tracker: StepTracker | None = None) -> None:
     """Copy constitution template to memory if it doesn't exist (preserves existing constitution on reinitialization)."""
-    memory_constitution = project_path / ".specify" / "memory" / "constitution.md"
+    memory_constitution = project_path / CONSTITUTION_REL_PATH
     template_constitution = project_path / ".specify" / "templates" / "constitution-template.md"
 
     # If constitution already exists in memory, preserve it
@@ -1186,6 +1191,12 @@ def init(
 
             ensure_constitution_from_template(project_path, tracker=tracker)
 
+            # Post-constitution hook: let the integration create its root
+            # context file (e.g. CLAUDE.md) now that the constitution exists.
+            context_file = resolved_integration.ensure_context_file(project_path, manifest)
+            if context_file is not None:
+                manifest.save()
+
             if not no_git:
                 tracker.start("git")
                 git_messages = []

src/specify_cli/integrations/base.py

@@ -89,6 +89,23 @@ def options(cls) -> list[IntegrationOption]:
         """Return options this integration accepts. Default: none."""
         return []
 
+    def ensure_context_file(
+        self,
+        project_root: Path,
+        manifest: "IntegrationManifest",
+    ) -> Path | None:
+        """Post-constitution-setup hook: create the agent's root context file.
+
+        Called from ``init()`` after ``ensure_constitution_from_template``
+        has run. Integrations that depend on the constitution should still
+        verify that it exists before using it, since the setup step may
+        complete without creating the file. Default: no-op. Integrations
+        that need a root file (e.g. ``CLAUDE.md``) should override this.
+        Returns the created path (to be recorded in the manifest) or
+        ``None``.
+        """
+        return None
+
     # -- Primitives — building blocks for setup() -------------------------
 
     def shared_commands_dir(self) -> Path | None:

src/specify_cli/integrations/claude/__init__.py

@@ -148,6 +148,49 @@ def _inject_frontmatter_flag(content: str, key: str, value: str = "true") -> str
             out.append(line)
         return "".join(out)
 
+    def ensure_context_file(
+        self,
+        project_root: Path,
+        manifest: IntegrationManifest,
+    ) -> Path | None:
+        """Create a minimal root ``CLAUDE.md`` if missing.
+
+        Typically called from ``init()`` after
+        ``ensure_constitution_from_template``. This file acts as a bridge
+        to the constitution at ``CONSTITUTION_REL_PATH`` and is only
+        created if that constitution file exists. Returns the created
+        path or ``None`` (existing file, or prerequisites not met).
+        """
+        from specify_cli import CONSTITUTION_REL_PATH
+
+        if self.context_file is None:
+            return None
+
+        constitution = project_root / CONSTITUTION_REL_PATH
+        context_file = project_root / self.context_file
+        if context_file.exists() or not constitution.exists():
+            return None
+
+        constitution_rel = CONSTITUTION_REL_PATH.as_posix()
+        content = (
+            "## Claude's Role\n"
+            f"Read `{constitution_rel}` first. It is the authoritative source of truth for this project. "
+            "Everything in it is non-negotiable.\n\n"
+            "## SpecKit Commands\n"
+            "- `/speckit.constitution` — establish or amend project principles\n"
+            "- `/speckit.specify` — generate spec\n"
+            "- `/speckit.clarify` — ask structured de-risking questions (before `/speckit.plan`)\n"
+            "- `/speckit.plan` — generate plan\n"
+            "- `/speckit.tasks` — generate task list\n"
+            "- `/speckit.analyze` — cross-artifact consistency report (after `/speckit.tasks`)\n"
+            "- `/speckit.checklist` — generate quality checklists\n"
+            "- `/speckit.implement` — execute plan\n\n"
+            "## On Ambiguity\n"
+            "If a spec is missing, incomplete, or conflicts with the constitution — stop and ask. "
+            "Do not infer. Do not proceed.\n\n"
+        )
+        return self.write_file_and_record(content, context_file, project_root, manifest)
+
     def setup(
         self,
         project_root: Path,

tests/integrations/test_integration_claude.py

@@ -6,6 +6,7 @@
 
 import yaml
 
+from specify_cli import CONSTITUTION_REL_PATH
 from specify_cli.integrations import INTEGRATION_REGISTRY, get_integration
 from specify_cli.integrations.base import IntegrationBase
 from specify_cli.integrations.claude import ARGUMENT_HINTS
@@ -286,6 +287,115 @@ def test_claude_preset_creates_new_skill_without_commands_dir(self, tmp_path):
         assert "speckit-research" in metadata.get("registered_skills", [])
 
 
+EXPECTED_CLAUDE_MD_COMMANDS = (
+    "/speckit.constitution",
+    "/speckit.specify",
+    "/speckit.clarify",
+    "/speckit.plan",
+    "/speckit.tasks",
+    "/speckit.analyze",
+    "/speckit.checklist",
+    "/speckit.implement",
+)
+EXPECTED_CLAUDE_MD_SECTIONS = (
+    "## Claude's Role",
+    "## SpecKit Commands",
+    "## On Ambiguity",
+)
+
+
+class TestClaudeMdCreation:
+    """Verify that CLAUDE.md is created after the constitution is in place."""
+
+    def test_ensure_context_file_creates_claude_md_when_constitution_exists(self, tmp_path):
+        integration = get_integration("claude")
+        constitution = tmp_path / CONSTITUTION_REL_PATH
+        constitution.parent.mkdir(parents=True, exist_ok=True)
+        constitution.write_text("# Constitution\n", encoding="utf-8")
+
+        manifest = IntegrationManifest("claude", tmp_path)
+        created = integration.ensure_context_file(tmp_path, manifest)
+
+        claude_md = tmp_path / "CLAUDE.md"
+        assert claude_md.exists()
+        assert created == claude_md
+        content = claude_md.read_text(encoding="utf-8")
+        assert CONSTITUTION_REL_PATH.as_posix() in content
+        for section in EXPECTED_CLAUDE_MD_SECTIONS:
+            assert section in content, f"missing section header: {section}"
+        for command in EXPECTED_CLAUDE_MD_COMMANDS:
+            assert f"`{command}`" in content, f"missing command: {command}"
+
+    def test_ensure_context_file_skips_when_constitution_missing(self, tmp_path):
+        integration = get_integration("claude")
+        manifest = IntegrationManifest("claude", tmp_path)
+        result = integration.ensure_context_file(tmp_path, manifest)
+
+        assert result is None
+        assert not (tmp_path / "CLAUDE.md").exists()
+
+    def test_ensure_context_file_preserves_existing_claude_md(self, tmp_path):
+        integration = get_integration("claude")
+        constitution = tmp_path / CONSTITUTION_REL_PATH
+        constitution.parent.mkdir(parents=True, exist_ok=True)
+        constitution.write_text("# Constitution\n", encoding="utf-8")
+
+        claude_md = tmp_path / "CLAUDE.md"
+        claude_md.write_text("# Custom content\n", encoding="utf-8")
+
+        manifest = IntegrationManifest("claude", tmp_path)
+        result = integration.ensure_context_file(tmp_path, manifest)
+
+        assert result is None
+        assert claude_md.read_text(encoding="utf-8") == "# Custom content\n"
+
+    def test_setup_does_not_create_claude_md_without_constitution(self, tmp_path):
+        """``setup()`` alone must not create CLAUDE.md — that's the context-file hook's job,
+        and it only runs after the constitution exists."""
+        integration = get_integration("claude")
+        manifest = IntegrationManifest("claude", tmp_path)
+        integration.setup(tmp_path, manifest, script_type="sh")
+        assert not (tmp_path / "CLAUDE.md").exists()
+
+    def test_init_cli_creates_claude_md_on_fresh_project(self, tmp_path):
+        """End-to-end: a fresh ``specify init --ai claude`` must produce
+        BOTH the constitution AND CLAUDE.md, proving the init-flow ordering
+        is correct (context file created after constitution)."""
+        from typer.testing import CliRunner
+        from specify_cli import app
+
+        project = tmp_path / "claude-md-test"
+        project.mkdir()
+
+        old_cwd = os.getcwd()
+        try:
+            os.chdir(project)
+            runner = CliRunner()
+            result = runner.invoke(
+                app,
+                ["init", "--here", "--ai", "claude", "--script", "sh", "--no-git", "--ignore-agent-tools"],
+                catch_exceptions=False,
+            )
+        finally:
+            os.chdir(old_cwd)
+
+        assert result.exit_code == 0, result.output
+
+        # Constitution must have been created by the init flow (not pre-seeded)
+        constitution = project / CONSTITUTION_REL_PATH
+        assert constitution.exists(), "init did not create the constitution"
+
+        # CLAUDE.md must exist and point at the constitution
+        claude_md = project / "CLAUDE.md"
+        assert claude_md.exists(), "init did not create CLAUDE.md"
+        content = claude_md.read_text(encoding="utf-8")
+        assert CONSTITUTION_REL_PATH.as_posix() in content
+        for section in EXPECTED_CLAUDE_MD_SECTIONS:
+            assert section in content, f"missing section header: {section}"
+        for command in EXPECTED_CLAUDE_MD_COMMANDS:
+            assert f"`{command}`" in content, f"missing command: {command}"
+
+
 class TestClaudeArgumentHints:
     """Verify that argument-hint frontmatter is injected for Claude skills."""