refactor(hooks): rename sisyphus-gpt-hephaestus-reminder to no-sisyphus-gpt

Shorter hook name, disableable via disabled_hooks config, migration added
for backward compatibility. Also forces agent switch to Hephaestus on
Sisyphus + GPT detection. Docs updated with new hook name.

src/plugin/chat-message.ts

@@ -81,7 +81,7 @@ export function createChatMessageHandler(args: {
     await hooks.keywordDetector?.["chat.message"]?.(input, output)
     await hooks.claudeCodeHooks?.["chat.message"]?.(input, output)
     await hooks.autoSlashCommand?.["chat.message"]?.(input, output)
-    await hooks.sisyphusGptHephaestusReminder?.["chat.message"]?.(input)
+    await hooks.noSisyphusGpt?.["chat.message"]?.(input, output)
     if (hooks.startWork && isStartWorkHookOutput(output)) {
       await hooks.startWork["chat.message"]?.(input, output)
     }

src/plugin/hooks/create-session-hooks.ts

@@ -20,7 +20,7 @@ import {
   createStartWorkHook,
   createPrometheusMdOnlyHook,
   createSisyphusJuniorNotepadHook,
-  createSisyphusGptHephaestusReminderHook,
+  createNoSisyphusGptHook,
   createQuestionLabelTruncatorHook,
   createPreemptiveCompactionHook,
 } from "../../hooks"
@@ -51,7 +51,7 @@ export type SessionHooks = {
   startWork: ReturnType<typeof createStartWorkHook> | null
   prometheusMdOnly: ReturnType<typeof createPrometheusMdOnlyHook> | null
   sisyphusJuniorNotepad: ReturnType<typeof createSisyphusJuniorNotepadHook> | null
-  sisyphusGptHephaestusReminder: ReturnType<typeof createSisyphusGptHephaestusReminderHook> | null
+  noSisyphusGpt: ReturnType<typeof createNoSisyphusGptHook> | null
   questionLabelTruncator: ReturnType<typeof createQuestionLabelTruncatorHook>
   taskResumeInfo: ReturnType<typeof createTaskResumeInfoHook>
   anthropicEffort: ReturnType<typeof createAnthropicEffortHook> | null
@@ -158,8 +158,8 @@ export function createSessionHooks(args: {
     ? safeHook("sisyphus-junior-notepad", () => createSisyphusJuniorNotepadHook(ctx))
     : null
 
-  const sisyphusGptHephaestusReminder = isHookEnabled("sisyphus-gpt-hephaestus-reminder")
-    ? safeHook("sisyphus-gpt-hephaestus-reminder", () => createSisyphusGptHephaestusReminderHook(ctx))
+  const noSisyphusGpt = isHookEnabled("no-sisyphus-gpt")
+    ? safeHook("no-sisyphus-gpt", () => createNoSisyphusGptHook(ctx))
     : null
 
   const questionLabelTruncator = createQuestionLabelTruncatorHook()
@@ -187,7 +187,7 @@ export function createSessionHooks(args: {
     startWork,
     prometheusMdOnly,
     sisyphusJuniorNotepad,
-    sisyphusGptHephaestusReminder,
+    noSisyphusGpt,
     questionLabelTruncator,
     taskResumeInfo,
     anthropicEffort,