docs(ultraplan-local): add Handover 7 + doc-consistency pins for /ultracontinue

Adds Handover 7 (.session-state.local.json) section to HANDOVER-CONTRACTS.md
documenting the multi-session-resume contract:
- Producers: ultraexecute Phase 8/2.55/4 + helper command + future
  graceful-handoff v2.2 + pre-compact-flush refresh
- Consumer: /ultracontinue (read-only)
- Schema v1: schema_version, project, next_session_brief_path,
  next_session_label, status (5-value enum), updated_at
- Forward-compat: unknown top-level keys silently tolerated (drift-WARN)
- Path: .claude/projects/<project>/.session-state.local.json (gitignored)
- Failure modes mapped to validator error codes

Also updates the validator → handover map and Versioning + Stability
tables to include Handover 7.

Extends tests/lib/doc-consistency.test.mjs with three new pins:
1. HANDOVER-CONTRACTS.md contains Handover 7 section
2. session-state-validator.mjs exposes the standard CLI shim
3. CLAUDE.md mentions /ultracontinue-local

Adds the /ultracontinue-local row to the plugin CLAUDE.md commands table —
minimum viable to keep the existing 'CLAUDE.md commands table mentions
every commands/*.md file' iteration test green. Step 11 (Session 2b) will
expand to full README + CLAUDE.md narrative documentation.

Test suite: 182 → 185 (3 new doc-consistency pins, zero regressions).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

plugins/ultraplan-local/tests/lib/doc-consistency.test.mjs

@@ -109,6 +109,19 @@ test('HANDOVER-CONTRACTS.md contains Handover 6 section', () => {
   );
 });
 
+test('HANDOVER-CONTRACTS.md contains Handover 7 section (session-state)', () => {
+  const text = read('docs/HANDOVER-CONTRACTS.md');
+  assert.ok(
+    text.includes('## Handover 7'),
+    'docs/HANDOVER-CONTRACTS.md should document Handover 7 (.session-state.local.json) ' +
+    'consumed by /ultracontinue',
+  );
+  assert.ok(
+    text.includes('.session-state.local.json'),
+    'Handover 7 section should name the artifact path',
+  );
+});
+
 test('review-validator has CLI shim', () => {
   const text = read('lib/validators/review-validator.mjs');
   assert.ok(
@@ -118,6 +131,24 @@ test('review-validator has CLI shim', () => {
   );
 });
 
+test('session-state-validator has CLI shim', () => {
+  const text = read('lib/validators/session-state-validator.mjs');
+  assert.ok(
+    text.includes('import.meta.url === '),
+    'lib/validators/session-state-validator.mjs should expose the standard CLI shim ' +
+    '(if (import.meta.url === `file://${process.argv[1]}`)) so /ultracontinue can call it from Bash',
+  );
+});
+
+test('CLAUDE.md mentions /ultracontinue-local command', () => {
+  const md = read('CLAUDE.md');
+  assert.ok(
+    md.includes('/ultracontinue-local') || md.includes('ultracontinue-local'),
+    'CLAUDE.md should document /ultracontinue-local in the Commands table ' +
+    '(added in v3.3.0 alongside the new command file)',
+  );
+});
+
 test('rule-catalogue has exactly 12 entries', async () => {
   const mod = await import('../../lib/review/rule-catalogue.mjs');
   assert.strictEqual(