feat(hooks): add /stop-continuation command to halt all continuation mechanisms (#1316)

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: justsisyphus <justsisyphus@users.noreply.github.com>
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/features/builtin-commands/templates/stop-continuation.test.ts

@@ -0,0 +1,25 @@
+import { describe, expect, test } from "bun:test"
+import { STOP_CONTINUATION_TEMPLATE } from "./stop-continuation"
+
+describe("stop-continuation template", () => {
+  test("should export a non-empty template string", () => {
+    // #given - the stop-continuation template
+
+    // #when - we access the template
+
+    // #then - it should be a non-empty string
+    expect(typeof STOP_CONTINUATION_TEMPLATE).toBe("string")
+    expect(STOP_CONTINUATION_TEMPLATE.length).toBeGreaterThan(0)
+  })
+
+  test("should describe the stop-continuation behavior", () => {
+    // #given - the stop-continuation template
+
+    // #when - we check the content
+
+    // #then - it should mention key behaviors
+    expect(STOP_CONTINUATION_TEMPLATE).toContain("todo-continuation-enforcer")
+    expect(STOP_CONTINUATION_TEMPLATE).toContain("Ralph Loop")
+    expect(STOP_CONTINUATION_TEMPLATE).toContain("boulder state")
+  })
+})