IF conversation contains "--resume BRAINSTORM-":
  Extract BRAINSTORM_ID from argument
  MODE = "resume"
ELSE IF conversation contains topic text after /brainstorm:
  TOPIC = extracted text
  MODE = "new"
ELSE:
  MODE = "new"
  TOPIC = null

IF MODE == "resume":
  checkpoint_path = "devforgeai/specs/brainstorms/${BRAINSTORM_ID}.checkpoint.json"
  Glob(pattern=checkpoint_path)

  IF found:
    Read(file_path=checkpoint_path)
    Restore session state from checkpoint
    CURRENT_PHASE = checkpoint.progress.current_phase
    Display: "Resuming ${BRAINSTORM_ID} from Phase ${CURRENT_PHASE}"
    GOTO Phase Orchestration Loop at CURRENT_PHASE
  ELSE:
    Display: "No checkpoint found for ${BRAINSTORM_ID}."
    AskUserQuestion:
      Question: "No checkpoint found. What would you like to do?"
      Header: "Resume"
      Options:
        - label: "Start a new brainstorm"
          description: "Begin fresh session"
        - label: "Check for completed document"
          description: "Look for existing brainstorm output"
    IF "Start new": MODE = "new", continue below
    IF "Check completed": Glob for existing .brainstorm.md files, display results

IF MODE == "new":
  # Scan for highest existing ID
  Glob(pattern="devforgeai/specs/brainstorms/BRAINSTORM-*.brainstorm.md")
  Glob(pattern="devforgeai/specs/brainstorms/BRAINSTORM-*.checkpoint.json")

  # Extract highest NNN, increment
  BRAINSTORM_ID = "BRAINSTORM-{NNN+1}" (zero-padded to 3 digits minimum)

  # Ensure output directory exists
  Glob(pattern="devforgeai/specs/brainstorms/.gitkeep")
  IF not found: Create directory structure

checkpoint = {
  "checkpoint_version": "1.0",
  "brainstorm_id": BRAINSTORM_ID,
  "session_number": 1,
  "created_at": "current timestamp",
  "status": "in_progress",
  "progress": {
    "current_phase": 0,
    "phases_completed": [],
    "completion_percentage": 0
  },
  "completed_outputs": {},
  "topic": TOPIC
}

Write(file_path="devforgeai/specs/brainstorms/${BRAINSTORM_ID}.checkpoint.json", content=checkpoint)

Display:
"━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
  DevForgeAI Discovery Session
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Session: ${BRAINSTORM_ID}
Mode: New Discovery
Topic: ${TOPIC || 'To be discovered in Phase 1'}

Phases: 7 (Stakeholders > Problem > Opportunities > Constraints > Hypotheses > Priorities > Synthesis)
Estimated Duration: 20-45 minutes
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"

FOR phase_num in range(CURRENT_PHASE, 8):  # Phases 01-07

    1. LOAD: Read(file_path=".claude/skills/spec-driven-brainstorming/phases/{phase_files[phase_num]}")
       Load the phase file FRESH. Do NOT rely on memory of previous reads.

    2. REFERENCE: Read the phase's reference file as specified in the phase Contract section.
       Each phase references a file in .claude/skills/spec-driven-brainstorming/references/.

    3. EXECUTE: Follow EVERY step in the phase file using EXECUTE-VERIFY-RECORD triplets.
       - Each step's EXECUTE tells you exactly what AskUserQuestion to call
       - Each step's VERIFY tells you how to confirm the data was captured
       - Each step's RECORD tells you how to update the checkpoint

    4. EXIT CRITERIA: Verify ALL phase exit criteria are met before proceeding.
       IF any required data key is null or empty: HALT.

    5. CHECKPOINT: Update checkpoint JSON with phase completion.
       Write updated checkpoint to disk.

    6. CONTEXT CHECK: If estimated context > 70%, offer save-and-resume via AskUserQuestion.
       IF user chooses "Save and resume later":
         Write final checkpoint, display resume command, EXIT skill.

IF phases_completed < 7: HALT "WORKFLOW INCOMPLETE - {completed_count}/7 phases"
IF output_file not on disk (Glob returns empty): HALT "Output document not generated"
IF checkpoint still exists: Delete checkpoint (session complete)