gsd-phase

<objective> Manage phases in ROADMAP.md with a single consolidated command.

• default (no flag): Add a new integer phase to the end of the current milestone → add-phase workflow
• --insert: Insert urgent work as a decimal phase (e.g., 72.1) between existing phases → insert-phase workflow
• --remove: Remove a future phase and renumber subsequent phases → remove-phase workflow
• --edit: Edit any field of an existing phase in place → edit-phase workflow </objective>

<routing> </routing> <context> Arguments: $ARGUMENTS

• If it is

  --insert

  : strip the flag, pass remainder (format: <after-phase-number> <description>) to insert-phase workflow
• If it is

  --remove

  : strip the flag, pass remainder (phase number) to remove-phase workflow
• If it is

  --edit

  : strip the flag, pass remainder (phase-number [--force]) to edit-phase workflow
• Otherwise: pass all of $ARGUMENTS (phase description) to add-phase workflow

<process> 1. Parse the leading flag (if any) from $ARGUMENTS. 2. Load and execute the appropriate workflow end-to-end based on the routing table above. 3. Preserve all validation gates from the target workflow. </process>