feat(build): bump build skill version to 1.22.0 and regenerate docs

Author: anbangr

build/SKILL.md

@@ -1,7 +1,7 @@
 ---
 name: build
 preamble-tier: 4
-version: 1.21.4
+version: 1.22.0
 description: |
   gstack autonomous execution skill. Reads the latest implementation plan and enters
   a strict coding loop to build the feature in phases, running tests and reviews

build/SKILL.md.tmpl

@@ -1,7 +1,7 @@
 ---
 name: build
 preamble-tier: 4
-version: 1.21.4
+version: 1.22.0
 description: |
   gstack autonomous execution skill. Reads the latest implementation plan and enters
   a strict coding loop to build the feature in phases, running tests and reviews

build/orchestrator/__tests__/skill-md.test.ts

@@ -8,7 +8,7 @@ test("SKILL.md.tmpl contains TDD changes", () => {
   const content = fs.readFileSync(tmplPath, "utf-8");
 
   expect(content.includes("**Test Specification")).toBe(true);
-  expect(content.includes("version: 1.21.4")).toBe(true);
+  expect(content.includes("version: 1.22.0")).toBe(true);
   expect(content.includes("tests_red")).toBe(true);
   expect(content.includes("Test Specification (test-writer role)")).toBe(true);
   expect(content.includes("exactly this durable sub-checkbox structure")).toBe(
@@ -30,7 +30,7 @@ test("generated SKILL.md reflects TDD changes", () => {
   const content = fs.readFileSync(skillPath, "utf-8");
 
   expect(content.includes("**Test Specification")).toBe(true);
-  expect(content.includes("version: 1.21.4")).toBe(true);
+  expect(content.includes("version: 1.22.0")).toBe(true);
   expect(content.includes("tests_red")).toBe(true);
   expect(content.includes("*-gstack/inbox/living-plan")).toBe(true);
   expect(content.includes('--project-root "$worktreePath"')).toBe(true);