fix(hooks): fix sisyphus-gpt-hephaestus-reminder never matching agent name

Use getAgentConfigKey() to normalize display names (e.g. 'Sisyphus (Ultraworker)')
back to config keys before comparison. Update toast to 10s duration with clearer
line-broken messaging.

src/hooks/sisyphus-gpt-hephaestus-reminder/hook.ts

@@ -1,9 +1,32 @@
 import type { PluginInput } from "@opencode-ai/plugin"
+import { isGptModel } from "../../agents/types"
 import { getSessionAgent } from "../../features/claude-code-session-state"
 import { log } from "../../shared"
+import { getAgentConfigKey } from "../../shared/agent-display-names"
 
-const TOAST_TITLE = "Use Hephaestus for GPT Models"
-const TOAST_MESSAGE = "Sisyphus is using a GPT model. Use Hephaestus and include 'ulw' in your prompt."
+const TOAST_TITLE = "NEVER Use Sisyphus with GPT"
+const TOAST_MESSAGE = [
+  "Sisyphus is NOT designed for GPT models.",
+  "Sisyphus + GPT performs worse than vanilla Codex.",
+  "You are literally burning money.",
+  "Use Hephaestus for GPT models instead.",
+].join("\n")
+
+function showToast(ctx: PluginInput, sessionID: string): void {
+  ctx.client.tui.showToast({
+    body: {
+      title: TOAST_TITLE,
+      message: TOAST_MESSAGE,
+      variant: "error",
+      duration: 10000,
+    },
+  }).catch((error) => {
+    log("[sisyphus-gpt-hephaestus-reminder] Failed to show toast", {
+      sessionID,
+      error,
+    })
+  })
+}
 
 export function createSisyphusGptHephaestusReminderHook(ctx: PluginInput) {
   return {
@@ -12,26 +35,13 @@ export function createSisyphusGptHephaestusReminderHook(ctx: PluginInput) {
       agent?: string
       model?: { providerID: string; modelID: string }
     }): Promise<void> => {
-      const agentName = (input.agent ?? getSessionAgent(input.sessionID) ?? "").toLowerCase()
-      const modelID = input.model?.modelID?.toLowerCase() ?? ""
+      const rawAgent = input.agent ?? getSessionAgent(input.sessionID) ?? ""
+      const agentKey = getAgentConfigKey(rawAgent)
+      const modelID = input.model?.modelID
 
-      if (agentName !== "sisyphus" || !modelID.includes("gpt")) {
-        return
+      if (agentKey === "sisyphus" && modelID && isGptModel(modelID)) {
+        showToast(ctx, input.sessionID)
       }
-
-      await ctx.client.tui.showToast({
-        body: {
-          title: TOAST_TITLE,
-          message: TOAST_MESSAGE,
-          variant: "error",
-          duration: 5000,
-        },
-      }).catch((error) => {
-        log("[sisyphus-gpt-hephaestus-reminder] Failed to show toast", {
-          sessionID: input.sessionID,
-          error,
-        })
-      })
     },
   }
 }