fix(dispatch): resolve plugin namespace parsing, template substitution, and discovery duplication

src/hooks/auto-slash-command/constants.test.ts

@@ -0,0 +1,19 @@
+import { describe, expect, it } from "bun:test"
+import { parseSlashCommand } from "./detector"
+
+describe("slash command parsing pattern", () => {
+  describe("#given plugin namespace includes dot", () => {
+    it("#then parses command name with dot and colon", () => {
+      // given
+      const text = "/my.plugin:run ship"
+
+      // when
+      const parsed = parseSlashCommand(text)
+
+      // then
+      expect(parsed).not.toBeNull()
+      expect(parsed?.command).toBe("my.plugin:run")
+      expect(parsed?.args).toBe("ship")
+    })
+  })
+})