fix: fix: disinto init can produce duplicate keys in projects/*.toml (#269)

Export actual_ops_slug from setup_ops_repo via _ACTUAL_OPS_SLUG global,
then update ops_repo in the TOML in-place using Python re.sub after TOML
creation or detection. Falls back to inserting after the repo line if the
key is missing. This prevents duplicate TOML keys on repeated init runs.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

bin/disinto

@@ -1216,6 +1216,9 @@ OPSEOF
       fi
     fi
   fi
+
+  # Export resolved slug for the caller to write back to the project TOML
+  _ACTUAL_OPS_SLUG="${actual_ops_slug}"
 }
 
 # Push local clone to the Forgejo remote.
@@ -2145,6 +2148,24 @@ p.write_text(text)
     echo "Created: ${toml_path}"
   fi
 
+  # Update ops_repo in TOML with the resolved actual ops slug.
+  # Uses in-place substitution to prevent duplicate keys on repeated init runs.
+  # If the key is missing (manually created TOML), it is inserted after the repo line.
+  if [ -n "${_ACTUAL_OPS_SLUG:-}" ] && [ -f "$toml_path" ]; then
+    python3 -c "
+import sys, re, pathlib
+p = pathlib.Path(sys.argv[1])
+text = p.read_text()
+new_val = 'ops_repo        = \"' + sys.argv[2] + '\"'
+if re.search(r'^ops_repo\s*=', text, re.MULTILINE):
+    text = re.sub(r'^ops_repo\s*=\s*.*\$', new_val, text, flags=re.MULTILINE)
+else:
+    text = re.sub(r'^(repo\s*=\s*\"[^\"]*\")', r'\1\n' + new_val, text, flags=re.MULTILINE)
+p.write_text(text)
+" "$toml_path" "${_ACTUAL_OPS_SLUG}"
+    echo "Updated: ops_repo in ${toml_path}"
+  fi
+
   # Create OAuth2 app on Forgejo for Woodpecker (before compose up)
   _WP_REPO_ID=""
   create_woodpecker_oauth "$forge_url" "$forge_repo"