fix(#1437): add phase.list-plans to gsd-tools (#1485)

* fix(#1437): add phase.list-plans to gsd-tools

Register phase.list-plans in PHASE_COMMAND_ALIASES, implement
cmdPhaseListPlans in src/phase.cts (uses findPhaseInternal + scanPhasePlans
to return plan_count/has_plans/plans/phase_dir), and wire the handler in
phase-command-router. Previously every call produced "Unknown phase
subcommand".

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

* fix(#1437): register new test file in lint-test-file-count allowlist

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

* fix(#1437): rename test to fix-NNN convention; update file-count allowlist

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

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

.changeset/sturdy-wasps-swim.md

@@ -0,0 +1,5 @@
+---
+type: Fixed
+pr: 1437
+---
+add phase.list-plans to gsd-tools — the command was referenced in agents/gsd-plan-checker.md but was missing from the router, causing 'Unknown phase subcommand' on every invocation

scripts/lint-test-file-count.allowlist.json

@@ -60,6 +60,7 @@
     },
     "phase": {
       "files": [
+        "fix-1437-phase-list-plans.test.cjs",
         "bug-214-phase-researcher-write-truncation-contract.test.cjs",
         "phase-dependency-levels.test.cjs",
         "phase.test.cjs"

src/command-aliases.cts

@@ -458,6 +458,14 @@ export const PHASE_COMMAND_ALIASES: CommandAlias[] = [
     ],
     "subcommand": "scaffold",
     "mutation": true
+  },
+  {
+    "canonical": "phase.list-plans",
+    "aliases": [
+      "phase list-plans"
+    ],
+    "subcommand": "list-plans",
+    "mutation": false
   }
 ];
 

src/phase-command-router.cts

@@ -33,6 +33,7 @@ interface PhaseHandlers {
   cmdPhaseRemove: (cwd: string, phaseNum: string, opts: { force: boolean }, raw: boolean) => void;
   cmdPhaseComplete: (cwd: string, phaseNum: string | undefined, raw: boolean) => void;
   cmdPhaseUatPassed: (cwd: string, phaseNum: string | undefined, raw: boolean, opts?: { policy?: { requireVerification?: boolean } }) => void;
+  cmdPhaseListPlans: (cwd: string, phaseNum: string | undefined, raw: boolean) => void;
 }
 
 interface RoutePhaseCommandOptions {
@@ -182,6 +183,11 @@ function routePhaseCommand({ phase, args, cwd, raw, error }: RoutePhaseCommandOp
         phase.cmdPhaseUatPassed(cwd, positional[0], raw, { policy: { requireVerification } });
         return { ok: true as const, data: null };
       },
+      // #1437 — list plan files for a phase
+      'list-plans': (_ctx: Record<string, unknown>): { ok: true; data: null } => {
+        phase.cmdPhaseListPlans(cwd, args[2], raw);
+        return { ok: true as const, data: null };
+      },
     },
   };
 

src/phase.cts

@@ -1825,6 +1825,40 @@ function cmdPhaseUatPassed(
   output({ phase: phaseNum, ...report }, raw);
 }
 
+// #1437 — phase.list-plans: list plan files for a given phase number.
+// Returns the full scan result from scanPhasePlans so callers can read plan
+// paths without re-discovering the phase directory themselves.
+// eslint-disable-next-line @typescript-eslint/no-require-imports -- plan-scan.cjs is an export= CommonJS module
+import planScanMod = require('./plan-scan.cjs');
+const { scanPhasePlans } = planScanMod;
+
+function cmdPhaseListPlans(cwd: string, phaseNum: string | undefined, raw: boolean): void {
+  if (!phaseNum) {
+    error('phase number required for phase list-plans');
+  }
+
+  const phaseInfo = findPhaseInternal(cwd, phaseNum!);
+  if (!phaseInfo) {
+    output({ phase: phaseNum, plan_count: 0, has_plans: false, plans: [], phase_dir: null }, raw);
+    return;
+  }
+
+  const phaseDir = path.join(cwd, (phaseInfo as unknown as Record<string, unknown>)['directory'] as string);
+  const scan = scanPhasePlans(phaseDir);
+  const phaseRel = (phaseInfo as unknown as Record<string, unknown>)['directory'] as string;
+
+  // Build absolute-usable relative paths for each plan file.
+  const plans = scan.planFiles.map((f: string) => toPosixPath(path.join(phaseRel, f)));
+
+  output({
+    phase: phaseNum,
+    phase_dir: phaseRel,
+    plan_count: scan.planCount,
+    has_plans: scan.planCount > 0,
+    plans,
+  }, raw);
+}
+
 export = {
   cmdPhasesList,
   cmdPhaseNextDecimal,
@@ -1837,5 +1871,6 @@ export = {
   cmdPhaseRemove,
   cmdPhaseComplete,
   cmdPhaseUatPassed,
+  cmdPhaseListPlans,
   computeDependencyLevels,
 };

tests/fix-1437-phase-list-plans.test.cjs

@@ -0,0 +1,125 @@
+'use strict';
+
+/**
+ * Regression tests for `gsd-tools query phase.list-plans <N>` (#1437).
+ *
+ * Prior to this fix, `phase.list-plans` was not registered in the
+ * phase-command-router, so any invocation produced:
+ *   "Error: Unknown phase subcommand. Available: uat-passed, next-decimal, ..."
+ *
+ * These tests exercise the full dispatch path:
+ *   gsd-tools → phase-command-router → phase.cmdPhaseListPlans
+ */
+
+const { describe, test, beforeEach, afterEach } = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const path = require('node:path');
+const { runGsdTools, createTempProject, cleanup } = require('./helpers.cjs');
+
+// ─── Fixture helpers ──────────────────────────────────────────────────────────
+
+function setupProject(phaseSlug = '01-feature') {
+  const tmpDir = createTempProject();
+  // Minimal ROADMAP so findPhaseInternal can resolve the phase directory
+  fs.writeFileSync(
+    path.join(tmpDir, '.planning', 'ROADMAP.md'),
+    [
+      '# Roadmap',
+      '',
+      '- [ ] Phase 1: Feature',
+      '',
+      '### Phase 1: Feature',
+      '**Goal:** Build feature',
+      '**Plans:** 1 plans',
+      '',
+    ].join('\n'),
+  );
+  const phaseDir = path.join(tmpDir, '.planning', 'phases', phaseSlug);
+  fs.mkdirSync(phaseDir, { recursive: true });
+  return { tmpDir, phaseDir };
+}
+
+function touch(dir, ...files) {
+  for (const f of files) {
+    fs.writeFileSync(path.join(dir, f), '');
+  }
+}
+
+// ─── Tests ────────────────────────────────────────────────────────────────────
+
+let tmpDir;
+let phaseDir;
+
+beforeEach(() => {
+  const proj = setupProject('01-feature');
+  tmpDir = proj.tmpDir;
+  phaseDir = proj.phaseDir;
+});
+
+afterEach(() => {
+  cleanup(tmpDir);
+});
+
+describe('bug-1437 — phase.list-plans is wired in gsd-tools', () => {
+  test('command no longer returns Unknown phase subcommand error', () => {
+    touch(phaseDir, '01-01-PLAN.md');
+    const result = runGsdTools(['query', 'phase.list-plans', '1'], tmpDir);
+    // Previously this would fail with "Unknown phase subcommand"
+    assert.ok(result.success, `Command failed: ${result.error}\nOutput: ${result.output}`);
+    assert.ok(!result.error || !result.error.includes('Unknown phase subcommand'),
+      `got unexpected error: ${result.error}`);
+  });
+
+  test('returns JSON with plan_count and plans array when plans exist', () => {
+    touch(phaseDir, '01-01-PLAN.md', '01-02-PLAN.md');
+    const result = runGsdTools(['query', 'phase.list-plans', '1', '--raw'], tmpDir);
+    assert.ok(result.success, `Command failed: ${result.error}\nOutput: ${result.output}`);
+    const data = JSON.parse(result.output);
+    assert.equal(data.plan_count, 2, 'plan_count should be 2');
+    assert.equal(data.has_plans, true, 'has_plans should be true');
+    assert.ok(Array.isArray(data.plans), 'plans should be an array');
+    assert.equal(data.plans.length, 2, 'plans array should have 2 entries');
+  });
+
+  test('returns plan_count 0 and empty plans array when phase has no plan files', () => {
+    // Phase directory exists but has no *-PLAN.md files
+    touch(phaseDir, 'CONTEXT.md');
+    const result = runGsdTools(['query', 'phase.list-plans', '1', '--raw'], tmpDir);
+    assert.ok(result.success, `Command failed: ${result.error}\nOutput: ${result.output}`);
+    const data = JSON.parse(result.output);
+    assert.equal(data.plan_count, 0);
+    assert.equal(data.has_plans, false);
+    assert.deepEqual(data.plans, []);
+  });
+
+  test('returns has_plans false when phase number is not found', () => {
+    // Phase 99 does not exist in the fixture
+    const result = runGsdTools(['query', 'phase.list-plans', '99', '--raw'], tmpDir);
+    assert.ok(result.success, `Command failed: ${result.error}\nOutput: ${result.output}`);
+    const data = JSON.parse(result.output);
+    assert.equal(data.has_plans, false);
+    assert.equal(data.plan_count, 0);
+  });
+
+  test('plan paths are relative to project root and posix-style', () => {
+    touch(phaseDir, '01-01-PLAN.md');
+    const result = runGsdTools(['query', 'phase.list-plans', '1', '--raw'], tmpDir);
+    assert.ok(result.success, `Command failed: ${result.error}\nOutput: ${result.output}`);
+    const data = JSON.parse(result.output);
+    assert.equal(data.plans.length, 1);
+    // Paths must be forward-slash separated (posix) and relative (not absolute)
+    const planPath = data.plans[0];
+    assert.ok(!path.isAbsolute(planPath), `expected relative path, got: ${planPath}`);
+    assert.ok(!planPath.includes('\\'), `expected posix path, got: ${planPath}`);
+    assert.ok(planPath.includes('01-01-PLAN.md'), `expected plan filename in path: ${planPath}`);
+  });
+
+  test('dotted form phase.list-plans (without query prefix) also works', () => {
+    touch(phaseDir, '01-01-PLAN.md');
+    const result = runGsdTools(['phase.list-plans', '1', '--raw'], tmpDir);
+    assert.ok(result.success, `Command failed: ${result.error}\nOutput: ${result.output}`);
+    const data = JSON.parse(result.output);
+    assert.equal(data.plan_count, 1);
+  });
+});

tests/phase-command-router.test.cjs

@@ -45,6 +45,7 @@ function makePhase(overrides = {}) {
     cmdPhaseInsert: () => {},
     cmdPhaseRemove: () => {},
     cmdPhaseComplete: () => {},
+    cmdPhaseListPlans: () => {},
     ...overrides,
   };
 }
@@ -280,26 +281,27 @@ describe('phase-command-router — result translation (error path)', () => {
     assert.ok(msg !== null);
     assert.ok(msg.includes('exactly one phase number'));
   });
+
+  // #1437 — phase.list-plans routing
+  test('routes phase list-plans: passes cwd, phaseNum, raw to handler', () => {
+    const calls = [];
+    const phase = makePhase({
+      cmdPhaseListPlans: (cwd, phaseNum, raw) => calls.push({ cwd, phaseNum, raw }),
+    });
+
+    routePhaseCommand({ phase, args: ['phase', 'list-plans', '03'], cwd: '/proj', raw: false, error: (m) => { throw new Error(m); } });
+
+    assert.equal(calls.length, 1);
+    assert.equal(calls[0].cwd, '/proj');
+    assert.equal(calls[0].phaseNum, '03');
+    assert.equal(calls[0].raw, false);
+  });
 });
 
 // ─── 3. Unsupported subcommands ────────────────────────────────────────────────
 
 describe('phase-command-router — unsupported subcommands', () => {
-  test('phase list-plans resolves as unknown subcommand', () => {
-    let msg = null;
-    routePhaseCommand({
-      phase: makePhase(),
-      args: ['phase', 'list-plans'],
-      cwd: '/p',
-      raw: false,
-      error: (m) => { msg = m; },
-    });
-
-    assert.ok(msg !== null);
-    assert.ok(msg.includes('Unknown phase subcommand'));
-    assert.ok(msg.includes('Available:'), `expected "Available:" in: ${msg}`);
-  });
-
+  // #1437: phase list-plans is now a supported subcommand — routing test in § 1.
   test('phase list-artifacts resolves as unknown subcommand', () => {
     let msg = null;
     routePhaseCommand({
@@ -363,7 +365,8 @@ describe('phase-command-router — unknown subcommand', () => {
 
     assert.ok(msg.includes('add'), `expected add in available list: ${msg}`);
     assert.ok(msg.includes('complete'), `expected complete in available list: ${msg}`);
-    assert.ok(!msg.includes('list-plans'), `list-plans must not appear in available list: ${msg}`);
+    // #1437: list-plans is now a supported command and appears in the available list
+    assert.ok(msg.includes('list-plans'), `list-plans must appear in available list: ${msg}`);
   });
 });