refactor(10): simplify plan frontmatter for parallelization

Remove confusing `parallelizable` boolean field. It was redundant - execute-phase already computes parallelizability from `depends_on` and file conflicts. Changes: - Remove `parallelizable: true|false` from plan frontmatter - Rename `files_exclusive` to `files_modified` (clearer intent) - Simplify execute-phase dependency detection logic - Update phase-prompt template and plan-phase workflow Parallelization is now fully automatic based on: - `depends_on: []` (empty = independent) - `files_modified: [...]` (no overlap = can parallelize) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-12 14:55:40 -06:00
parent c163004a15
commit 755b28e644
3 changed files with 54 additions and 119 deletions
--- a/get-shit-done/workflows/execute-phase.md
+++ b/get-shit-done/workflows/execute-phase.md
@@ -121,58 +121,43 @@ echo "Found ${#UNEXECUTED[@]} unexecuted plans"

 ```bash
 # Initialize associative arrays for tracking
-declare -A PLAN_REQUIRES      # plan -> required plans
+declare -A PLAN_REQUIRES      # plan -> required plans (from depends_on or inferred)
 declare -A PLAN_FILES         # plan -> files modified
 declare -A PLAN_CHECKPOINTS   # plan -> has checkpoints
-declare -A PLAN_PARALLELIZABLE # plan -> explicit parallelizable flag (Phase 11+)
-declare -A PLAN_DEPENDS_ON    # plan -> explicit depends_on list (Phase 11+)
-declare -A PLAN_FILES_EXCLUSIVE # plan -> explicit file ownership (Phase 11+)
-declare -A PLAN_HAS_FRONTMATTER # plan -> whether has new frontmatter

 for plan in "${UNEXECUTED[@]}"; do
  plan_id=$(basename "$plan" -PLAN.md)

-  # NEW: Check for parallelization frontmatter (Phase 11+)
-  PARALLELIZABLE=$(awk '/^---$/,/^---$/' "$plan" | grep "^parallelizable:" | awk '{print $2}')
+  # Check for depends_on frontmatter
  DEPENDS_ON=$(awk '/^---$/,/^---$/' "$plan" | grep "^depends_on:" | sed 's/depends_on: \[//' | sed 's/\]//' | tr -d ' "')
-  FILES_EXCLUSIVE=$(awk '/^---$/,/^---$/' "$plan" | grep "^files_exclusive:" | sed 's/files_exclusive: \[//' | sed 's/\]//' | tr -d ' "')

-  # If frontmatter fields exist, use them directly
-  if [ -n "$PARALLELIZABLE" ]; then
-    PLAN_HAS_FRONTMATTER["$plan_id"]="true"
-    PLAN_PARALLELIZABLE["$plan_id"]="$PARALLELIZABLE"
-    PLAN_DEPENDS_ON["$plan_id"]="$DEPENDS_ON"
-    PLAN_FILES_EXCLUSIVE["$plan_id"]="$FILES_EXCLUSIVE"
+  # Check for files_modified frontmatter
+  FILES_MODIFIED=$(awk '/^---$/,/^---$/' "$plan" | grep "^files_modified:" | sed 's/files_modified: \[//' | sed 's/\]//' | tr -d ' "')

-    # Use files_exclusive as PLAN_FILES when present
-    if [ -n "$FILES_EXCLUSIVE" ]; then
-      PLAN_FILES["$plan_id"]="$FILES_EXCLUSIVE"
-    fi
-
-    # Use depends_on as PLAN_REQUIRES when present
-    if [ -n "$DEPENDS_ON" ]; then
-      PLAN_REQUIRES["$plan_id"]="$DEPENDS_ON"
-    fi
+  # Use frontmatter if present
+  if [ -n "$DEPENDS_ON" ]; then
+    PLAN_REQUIRES["$plan_id"]="$DEPENDS_ON"
  else
-    PLAN_HAS_FRONTMATTER["$plan_id"]="false"
-
-    # Fall back to inference (existing logic)
-    # Extract frontmatter requires (handles YAML array syntax)
+    # Fall back to inference from old frontmatter format
    REQUIRES=$(awk '/^---$/,/^---$/' "$plan" | grep -E "^\s*-\s*phase:" | grep -oP '\d+' | tr '\n' ',')
    PLAN_REQUIRES["$plan_id"]="${REQUIRES%,}"

-    # Extract files from <files> elements (all occurrences)
-    FILES=$(grep -oP '(?<=<files>)[^<]+(?=</files>)' "$plan" | tr '\n' ',' | tr -d ' ')
-    PLAN_FILES["$plan_id"]="${FILES%,}"
-
-    # Check for SUMMARY references in @context
+    # Check for SUMMARY references in @context (implies dependency)
    SUMMARY_REFS=$(grep -oP '@[^@]*\d+-\d+-SUMMARY\.md' "$plan" | grep -oP '\d+-\d+' | tr '\n' ',')
    if [ -n "$SUMMARY_REFS" ]; then
      PLAN_REQUIRES["$plan_id"]="${PLAN_REQUIRES[$plan_id]},${SUMMARY_REFS%,}"
    fi
  fi

-  # Check for checkpoint tasks (always check, regardless of frontmatter)
+  # Use files_modified frontmatter if present, else extract from <files> elements
+  if [ -n "$FILES_MODIFIED" ]; then
+    PLAN_FILES["$plan_id"]="$FILES_MODIFIED"
+  else
+    FILES=$(grep -oP '(?<=<files>)[^<]+(?=</files>)' "$plan" | tr '\n' ',' | tr -d ' ')
+    PLAN_FILES["$plan_id"]="${FILES%,}"
+  fi
+
+  # Check for checkpoint tasks
  if grep -q 'type="checkpoint' "$plan"; then
    PLAN_CHECKPOINTS["$plan_id"]="true"
  else
@@ -181,14 +166,13 @@ for plan in "${UNEXECUTED[@]}"; do
 done
 ```

-**Dependency detection priority:**
+**Dependency detection:**

 1. **If `depends_on` frontmatter exists:** Use it directly
-2. **If `parallelizable: false` in frontmatter:** Mark as dependent (even without explicit depends_on)
-3. **If no frontmatter:** Fall back to inference:
+2. **If no frontmatter:** Fall back to inference:
   - Parse `requires` from old frontmatter format
-   - Detect file conflicts via `<files>` elements
   - Check for SUMMARY references in @context
+3. **File conflicts:** Detected separately in step 4

 **3. Build dependency graph:**

@@ -249,20 +233,15 @@ done
 - If Plan B reads file created by Plan A → B depends on A
 - If Plan B references Plan A's SUMMARY in @context → B depends on A

-**5. Categorize plans (frontmatter-aware):**
+**5. Categorize plans:**

 | Category | Criteria | Action |
 |----------|----------|--------|
-| independent | `parallelizable: true` in frontmatter OR (no frontmatter AND no inferred dependencies) | Can run in parallel (Wave 1) |
-| dependent | `parallelizable: false` OR has depends_on OR inferred dependencies | Wait for dependency |
+| independent | Empty `depends_on` AND no file conflicts | Can run in parallel (Wave 1) |
+| dependent | Has `depends_on` OR file conflicts with earlier plan | Wait for dependency |
 | has_checkpoints | Contains checkpoint tasks | Foreground or skip checkpoints |

-**Categorization priority:**
-1. If `parallelizable` frontmatter exists: Use it directly
-2. If no frontmatter: Use inferred category from file/SUMMARY analysis
-3. `has_checkpoints` applies regardless of frontmatter
-
-**6. Build execution waves (topological sort, frontmatter-aware):**
+**6. Build execution waves (topological sort):**

 ```bash
 # Calculate wave for each plan
@@ -274,29 +253,8 @@ calculate_wave() {

  local max_dep_wave=0

-  # Check for explicit parallelizable: false (force Wave 2+ even without deps)
-  if [ "${PLAN_HAS_FRONTMATTER[$plan]}" = "true" ]; then
-    if [ "${PLAN_PARALLELIZABLE[$plan]}" = "false" ] && [ -z "${PLAN_DEPENDS_ON[$plan]}" ]; then
-      # parallelizable: false without deps = Wave 2 (wait for all Wave 1)
-      max_dep_wave=1
-    fi
-  fi
-
-  # Check frontmatter depends_on first
-  if [ -n "${PLAN_DEPENDS_ON[$plan]}" ]; then
-    IFS=',' read -ra deps <<< "${PLAN_DEPENDS_ON[$plan]}"
-    for dep in "${deps[@]}"; do
-      [ -z "$dep" ] && continue
-      # Only consider deps in current phase (unexecuted)
-      if [[ " ${!PLAN_FILES[*]} " =~ " $dep " ]]; then
-        dep_wave=$(calculate_wave "$dep")
-        [ "$dep_wave" -gt "$max_dep_wave" ] && max_dep_wave="$dep_wave"
-      fi
-    done
-  fi
-
-  # Fall back to inferred requires if no frontmatter depends_on
-  if [ "${PLAN_HAS_FRONTMATTER[$plan]}" != "true" ] && [ -n "${PLAN_REQUIRES[$plan]}" ]; then
+  # Check depends_on (from frontmatter or inferred)
+  if [ -n "${PLAN_REQUIRES[$plan]}" ]; then
    IFS=',' read -ra dep_array <<< "${PLAN_REQUIRES[$plan]}"
    for dep in "${dep_array[@]}"; do
      [ -z "$dep" ] && continue
--- a/get-shit-done/workflows/plan-phase.md
+++ b/get-shit-done/workflows/plan-phase.md
@@ -69,8 +69,8 @@ cat .planning/config.json 2>/dev/null | jq '.parallelization'
 - If `parallelization.enabled && parallelization.plan_level`: Planning will optimize for independence
  - Group tasks by vertical slice (feature A, feature B) not workflow stage (setup → implement → test)
  - Avoid unnecessary inter-plan dependencies
-  - Mark explicit file ownership per plan via files_exclusive
-  - Set parallelizable: true when genuinely independent
+  - Track files each plan modifies via `files_modified`
+  - Keep `depends_on` empty when genuinely independent
 - If disabled: Planning proceeds with sequential assumptions (current behavior)

 **If config.json missing:** Assume parallelization enabled (new projects get it by default).
@@ -334,13 +334,13 @@ See ~/.claude/get-shit-done/references/checkpoints.md for checkpoint structure.
   - Shared infrastructure (all features need auth setup first)
   - Single-concern phases (all plans ARE vertical slices already)

-4. **Mark plans with parallelization frontmatter:**
+4. **Set plan frontmatter for parallelization:**

   For each plan, determine:
-   - `parallelizable: true` if no file overlap with siblings AND no depends_on
-   - `parallelizable: false` if has dependencies or file conflicts
-   - `depends_on: [plan-ids]` explicit dependencies from analysis
-   - `files_exclusive: [paths]` files only this plan touches
+   - `depends_on: [plan-ids]` — explicit dependencies (empty if independent)
+   - `files_modified: [paths]` — files this plan will modify
+
+   `/gsd:execute-phase` uses these to detect parallelization opportunities automatically.

 **Output:** Task groupings optimized for independence, frontmatter values determined.
 </step>
@@ -427,32 +427,27 @@ Use template from `~/.claude/get-shit-done/templates/phase-prompt.md`.
 **Multiple plans:** Write separate files ({phase}-01-PLAN.md, {phase}-02-PLAN.md, etc.)

 Each plan follows template structure with:
- Frontmatter (phase, plan, type, parallelizable, depends_on, files_exclusive, domain)
+- Frontmatter (phase, plan, type, depends_on, files_modified, domain)
 - Objective (plan-specific goal, purpose, output)
 - Execution context (execute-plan.md, summary template, checkpoints.md if needed)
 - Context (@references to PROJECT, ROADMAP, STATE, codebase docs, RESEARCH/DISCOVERY/CONTEXT if exist, prior summaries, source files, prior decisions, deferred issues, concerns)
 - Tasks (XML format with types)
 - Verification, Success criteria, Output specification

-**Parallelization frontmatter (from parallelization_aware step):**
+**Plan frontmatter:**

 ```yaml
 ---
 phase: XX-name
 plan: NN
 type: execute
-parallelizable: [true if independent, false if has dependencies]
-depends_on: [plan IDs from analysis, or empty array]
-files_exclusive: [files only this plan modifies]
+depends_on: [plan IDs this plan requires, or empty array]
+files_modified: [files this plan will modify]
 domain: [optional]
 ---
 ```

-**Rules for parallelizable field:**
- `true`: No file overlap with sibling plans, no depends_on entries, no SUMMARY references needed
- `false`: Has dependencies, shares files, or requires sequential execution
-
-**If parallelization disabled in config:** Still include fields but set `parallelizable: false` for all plans.
+**Parallelization is automatic:** `/gsd:execute-phase` analyzes `depends_on` and `files_modified` to determine which plans can run in parallel. No explicit flag needed.

 **Context section population from frontmatter analysis:**