feat: add /canary, /benchmark, /land-and-deploy skills (v0.7.0)

Three new skills that close the deploy loop:
- /canary: standalone post-deploy monitoring with browse daemon
- /benchmark: performance regression detection with Web Vitals
- /land-and-deploy: merge PR, wait for deploy, canary verify production

Incorporates patterns from community PR #151.

Co-Authored-By: HMAKT99 <HMAKT99@users.noreply.github.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/gen-skill-docs.ts

@@ -1155,6 +1155,9 @@ function findTemplates(): string[] {
     path.join(ROOT, 'design-review', 'SKILL.md.tmpl'),
     path.join(ROOT, 'design-consultation', 'SKILL.md.tmpl'),
     path.join(ROOT, 'document-release', 'SKILL.md.tmpl'),
+    path.join(ROOT, 'canary', 'SKILL.md.tmpl'),
+    path.join(ROOT, 'benchmark', 'SKILL.md.tmpl'),
+    path.join(ROOT, 'land-and-deploy', 'SKILL.md.tmpl'),
   ];
   for (const p of candidates) {
     if (fs.existsSync(p)) templates.push(p);

scripts/skill-check.ts

@@ -31,6 +31,9 @@ const SKILL_FILES = [
   'design-review/SKILL.md',
   'gstack-upgrade/SKILL.md',
   'document-release/SKILL.md',
+  'canary/SKILL.md',
+  'benchmark/SKILL.md',
+  'land-and-deploy/SKILL.md',
 ].filter(f => fs.existsSync(path.join(ROOT, f)));
 
 let hasErrors = false;