fix: re-record manifest hash after hint injection, quote hint values

- Re-record file hash in manifest after writing argument-hint so
  check_modified()/uninstall stays in sync
- Double-quote argument-hint values to match SKILL.md frontmatter style
- Update tests to expect quoted hint values

Author: Quratulain-bilal

src/specify_cli/integrations/claude/__init__.py

@@ -85,7 +85,8 @@ def inject_argument_hint(content: str, hint: str) -> str:
                     eol = "\n"
                 else:
                     eol = ""
-                out.append(f"argument-hint: {hint}{eol}")
+                escaped = hint.replace("\\", "\\\\").replace('"', '\\"')
+                out.append(f'argument-hint: "{escaped}"{eol}')
                 injected = True
                 continue
             out.append(line)
@@ -147,5 +148,7 @@ def setup(
             updated = self.inject_argument_hint(content, hint)
             if updated != content:
                 path.write_bytes(updated.encode("utf-8"))
+                # Re-record hash so manifest stays in sync for uninstall
+                self.record_file_in_manifest(path, project_root, manifest)
 
         return created

tests/integrations/test_integration_claude.py

@@ -314,7 +314,7 @@ def test_hints_match_expected_values(self, tmp_path):
                 f"No expected hint defined for skill '{stem}'"
             )
             content = f.read_text(encoding="utf-8")
-            assert f"argument-hint: {expected_hint}" in content, (
+            assert f'argument-hint: "{expected_hint}"' in content, (
                 f"{f.parent.name}/SKILL.md: expected hint '{expected_hint}' not found"
             )
 
@@ -386,7 +386,7 @@ def test_inject_argument_hint_skips_if_already_present(self):
         content = (
             "---\n"
             "description: My command\n"
-            "argument-hint: Existing hint\n"
+            'argument-hint: "Existing hint"\n'
             "---\n"
             "\n"
             "Body text\n"