feat(start-work): add auto_commit config option

Add start_work.auto_commit configuration option to allow users to
disable the automatic commit step in the /start-work workflow.

When auto_commit is false:
- STEP 8: COMMIT ATOMIC UNIT is removed from orchestrator reminder
- STEP 9: PROCEED TO NEXT TASK becomes STEP 8

Resolves #2197

src/config/schema/oh-my-opencode-config.ts

@@ -18,6 +18,7 @@ import { SkillsConfigSchema } from "./skills"
 import { SisyphusConfigSchema } from "./sisyphus"
 import { SisyphusAgentConfigSchema } from "./sisyphus-agent"
 import { TmuxConfigSchema } from "./tmux"
+import { StartWorkConfigSchema } from "./start-work"
 import { WebsearchConfigSchema } from "./websearch"
 
 export const OhMyOpenCodeConfigSchema = z.object({
@@ -60,6 +61,7 @@ export const OhMyOpenCodeConfigSchema = z.object({
   websearch: WebsearchConfigSchema.optional(),
   tmux: TmuxConfigSchema.optional(),
   sisyphus: SisyphusConfigSchema.optional(),
+  start_work: StartWorkConfigSchema.optional(),
   /** Migration history to prevent re-applying migrations (e.g., model version upgrades) */
   _migrations: z.array(z.string()).optional(),
 })

src/config/schema/start-work.ts

@@ -0,0 +1,8 @@
+import { z } from "zod"
+
+export const StartWorkConfigSchema = z.object({
+  /** Enable auto-commit after each atomic task completion (default: true) */
+  auto_commit: z.boolean().default(true),
+})
+
+export type StartWorkConfig = z.infer<typeof StartWorkConfigSchema>