refactor: dynamically generate roomodes JSON schema from Zod types

Replace the hand-crafted schemas/roomodes.json with one generated from
the Zod schemas in packages/types/src/mode.ts using zod-to-json-schema.
This ensures the schema stays in sync when TypeScript types change.

- Add zod-to-json-schema dev dependency to packages/types
- Create packages/types/scripts/generate-roomodes-schema.ts
- Add generate:schema npm script to packages/types
- Add drift-detection test in packages/types to catch schema/type mismatches
- Update existing AJV validation tests with documentation comment

Author: roomote

packages/types/package.json

@@ -20,7 +20,8 @@
 		"build": "tsup",
 		"build:watch": "tsup --watch --outDir npm/dist --onSuccess 'echo ✅ Types rebuilt to npm/dist'",
 		"npm:publish": "node scripts/publish-npm.cjs",
-		"clean": "rimraf dist .turbo"
+		"clean": "rimraf dist .turbo",
+		"generate:schema": "tsx scripts/generate-roomodes-schema.ts"
 	},
 	"dependencies": {
 		"zod": "3.25.76"
@@ -31,6 +32,7 @@
 		"@types/node": "^24.1.0",
 		"globals": "^16.3.0",
 		"tsup": "^8.4.0",
-		"vitest": "^3.2.3"
+		"vitest": "^3.2.3",
+		"zod-to-json-schema": "^3.25.1"
 	}
 }

packages/types/scripts/generate-roomodes-schema.ts

@@ -0,0 +1,83 @@
+/**
+ * Generates the JSON Schema for .roomodes configuration files from the Zod
+ * schemas defined in packages/types/src/mode.ts.
+ *
+ * This ensures the schema stays in sync with the TypeScript types. Run via:
+ *   pnpm --filter @roo-code/types generate:schema
+ *
+ * The output is written to schemas/roomodes.json at the repository root.
+ */
+
+import * as fs from "fs"
+import * as path from "path"
+import { fileURLToPath } from "url"
+import { zodToJsonSchema } from "zod-to-json-schema"
+import { z } from "zod"
+
+import { toolGroups, deprecatedToolGroups } from "../src/tool.js"
+import { groupOptionsSchema, modeConfigSchema } from "../src/mode.js"
+
+// ---------------------------------------------------------------------------
+// 1. Build a ToolGroup enum that includes deprecated groups so existing
+//    configs still validate.
+// ---------------------------------------------------------------------------
+const allToolGroups = [...toolGroups, ...deprecatedToolGroups] as [string, ...string[]]
+const allToolGroupsSchema = z.enum(allToolGroups)
+
+// ---------------------------------------------------------------------------
+// 2. Build a GroupEntry schema that uses the extended tool group list.
+// ---------------------------------------------------------------------------
+const groupEntrySchema = z.union([allToolGroupsSchema, z.tuple([allToolGroupsSchema, groupOptionsSchema])])
+
+// ---------------------------------------------------------------------------
+// 3. Build the RuleFile schema (used during import/export but not part of
+//    the core Zod types).
+// ---------------------------------------------------------------------------
+const ruleFileSchema = z.object({
+	relativePath: z.string(),
+	content: z.string().optional(),
+})
+
+// ---------------------------------------------------------------------------
+// 4. Build an extended ModeConfig schema that includes rulesFiles and uses
+//    the extended groups (with deprecated entries).
+// ---------------------------------------------------------------------------
+const exportedModeConfigSchema = modeConfigSchema.omit({ groups: true }).extend({
+	groups: z.array(groupEntrySchema),
+	rulesFiles: z.array(ruleFileSchema).optional(),
+})
+
+// ---------------------------------------------------------------------------
+// 5. Build the top-level .roomodes schema.
+// ---------------------------------------------------------------------------
+const roomodesSchema = z
+	.object({
+		customModes: z.array(exportedModeConfigSchema),
+	})
+	.strict()
+
+// ---------------------------------------------------------------------------
+// 6. Convert to JSON Schema (draft-07).
+// ---------------------------------------------------------------------------
+const jsonSchema = zodToJsonSchema(roomodesSchema, {
+	$refStrategy: "none",
+	target: "jsonSchema7",
+}) as Record<string, unknown>
+
+// ---------------------------------------------------------------------------
+// 7. Add metadata.
+// ---------------------------------------------------------------------------
+jsonSchema["$id"] = "https://github.com/RooCodeInc/Roo-Code/blob/main/schemas/roomodes.json"
+jsonSchema["title"] = "Roo Code Custom Modes"
+jsonSchema["description"] = "Schema for .roomodes configuration files used by Roo Code to define custom modes."
+
+// ---------------------------------------------------------------------------
+// 8. Write to disk.
+// ---------------------------------------------------------------------------
+const __dirname = path.dirname(fileURLToPath(import.meta.url))
+const repoRoot = path.resolve(__dirname, "../../..")
+const outPath = path.join(repoRoot, "schemas", "roomodes.json")
+fs.mkdirSync(path.dirname(outPath), { recursive: true })
+fs.writeFileSync(outPath, JSON.stringify(jsonSchema, null, "\t") + "\n", "utf-8")
+
+console.log(`Generated ${path.relative(repoRoot, outPath)}`)

packages/types/src/__tests__/roomodes-schema-sync.spec.ts

@@ -0,0 +1,54 @@
+import { describe, it, expect } from "vitest"
+import * as fs from "fs"
+import * as path from "path"
+import { fileURLToPath } from "url"
+import { zodToJsonSchema } from "zod-to-json-schema"
+import { z } from "zod"
+
+import { toolGroups, deprecatedToolGroups } from "../tool.js"
+import { groupOptionsSchema, modeConfigSchema } from "../mode.js"
+
+/**
+ * This test verifies that the checked-in schemas/roomodes.json matches what
+ * would be generated from the current Zod schemas. If this test fails, run:
+ *
+ *   pnpm --filter @roo-code/types generate:schema
+ *
+ * to regenerate the schema file.
+ */
+describe("roomodes schema sync", () => {
+	it("should match the dynamically generated schema from Zod types", () => {
+		const __dirname = path.dirname(fileURLToPath(import.meta.url))
+		const schemaPath = path.resolve(__dirname, "../../../../schemas/roomodes.json")
+		const checkedIn = JSON.parse(fs.readFileSync(schemaPath, "utf-8"))
+
+		// Reproduce the same generation logic as scripts/generate-roomodes-schema.ts
+		const allToolGroups = [...toolGroups, ...deprecatedToolGroups] as [string, ...string[]]
+		const allToolGroupsSchema = z.enum(allToolGroups)
+		const groupEntrySchema = z.union([allToolGroupsSchema, z.tuple([allToolGroupsSchema, groupOptionsSchema])])
+		const ruleFileSchema = z.object({
+			relativePath: z.string(),
+			content: z.string().optional(),
+		})
+		const exportedModeConfigSchema = modeConfigSchema.omit({ groups: true }).extend({
+			groups: z.array(groupEntrySchema),
+			rulesFiles: z.array(ruleFileSchema).optional(),
+		})
+		const roomodesSchema = z
+			.object({
+				customModes: z.array(exportedModeConfigSchema),
+			})
+			.strict()
+
+		const generated = zodToJsonSchema(roomodesSchema, {
+			$refStrategy: "none",
+			target: "jsonSchema7",
+		}) as Record<string, unknown>
+
+		generated["$id"] = "https://github.com/RooCodeInc/Roo-Code/blob/main/schemas/roomodes.json"
+		generated["title"] = "Roo Code Custom Modes"
+		generated["description"] = "Schema for .roomodes configuration files used by Roo Code to define custom modes."
+
+		expect(checkedIn).toEqual(generated)
+	})
+})