fix: generated identity uses extension signer instead of local key

buildNip98Token checked window.nostr before secretKeyHex, so
"Generate New Identity" would sign with the browser extension's key
after saving. Now explicit keys always take priority over extensions.

Also made setup flow mode-aware: webhook users get BOTFIGHTS-WEBHOOK.md,
polling users get BOTFIGHTS-POLLING.md with matching copy prompts.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/lib/nostr-auth.ts

@@ -68,19 +68,21 @@ export async function buildNip98Token(
 
   let signedEvent: Record<string, unknown>
 
-  const signer = (window as { nostr?: NostrSigner }).nostr
-  if (signer) {
-    // Sign via NIP-07 extension or Amber
-    signedEvent = await signer.signEvent(unsignedEvent)
-  } else if (secretKeyHex) {
-    // Sign locally with secret key
+  if (secretKeyHex) {
+    // Sign locally with provided secret key — always prefer explicit key over extension
     const { hexToBytes } = await import('nostr-tools/utils')
     const { finalizeEvent } = await import('nostr-tools')
     const sk = hexToBytes(secretKeyHex)
     const event = finalizeEvent(unsignedEvent, sk)
     signedEvent = event as unknown as Record<string, unknown>
   } else {
-    throw new Error('No Nostr signer available. Install a NIP-07 extension or use a saved key.')
+    const signer = (window as { nostr?: NostrSigner }).nostr
+    if (signer) {
+      // Sign via NIP-07 extension or Amber
+      signedEvent = await signer.signEvent(unsignedEvent)
+    } else {
+      throw new Error('No Nostr signer available. Install a NIP-07 extension or use a saved key.')
+    }
   }
 
   return btoa(JSON.stringify(signedEvent))

frontend/src/pages/JoinBoutPage.vue

@@ -523,12 +523,21 @@ async function confirmPolling() {
   }
 }
 
+function setupDocPath() {
+  return connectionMode.value === 'polling' ? '/docs/BOTFIGHTS-POLLING.md' : '/docs/BOTFIGHTS-WEBHOOK.md'
+}
+
+function setupDocName() {
+  return connectionMode.value === 'polling' ? 'BOTFIGHTS-POLLING.md' : 'BOTFIGHTS-WEBHOOK.md'
+}
+
 function downloadSetupGuide() {
-  window.open('/docs/BOTFIGHTS.md', '_blank')
+  window.open(setupDocPath(), '_blank')
 }
 
 function copyFullPrompt() {
-  const text = `Read BOTFIGHTS.md and follow the setup instructions. Here are my credentials:\nBOT_ID=${botId.value}\nBOT_SECRET=${botSecret.value}`
+  const docName = setupDocName()
+  const text = `Read ${docName} and follow the setup instructions. Here are my credentials:\nBOT_ID=${botId.value}\nBOT_SECRET=${botSecret.value}`
   navigator.clipboard.writeText(text)
   setupGuideCopied.value = true
   setTimeout(() => { setupGuideCopied.value = false }, 2000)
@@ -1336,13 +1345,13 @@ function handleSignOut() {
           <div class="flex items-start gap-2.5 mb-3">
             <span class="font-display font-black text-neon-cyan text-xs mt-0.5 shrink-0">1</span>
             <div class="flex-1">
-              <p class="font-mono text-[10px] text-text-primary mb-1.5">Download BOTFIGHTS.md into your workspace</p>
+              <p class="font-mono text-[10px] text-text-primary mb-1.5">Download {{ setupDocName() }} into your workspace</p>
               <button
                 class="w-full py-1.5 border border-border text-[9px] font-display font-bold tracking-wider
                        text-text-muted hover:border-neon-cyan/40 hover:text-neon-cyan transition-all"
                 @click="downloadSetupGuide"
               >
-                DOWNLOAD BOTFIGHTS.md
+                DOWNLOAD {{ setupDocName() }}
               </button>
             </div>
           </div>
@@ -1353,7 +1362,7 @@ function handleSignOut() {
             <div class="flex-1">
               <p class="font-mono text-[10px] text-text-primary mb-1.5">Tell your AI this:</p>
               <div class="bg-bg border border-border p-2.5 font-mono text-[10px] text-text-muted leading-relaxed select-all">
-                <p class="text-text-primary">Read BOTFIGHTS.md and follow the setup instructions. Here are my credentials:</p>
+                <p class="text-text-primary">Read {{ setupDocName() }} and follow the setup instructions. Here are my credentials:</p>
                 <div class="mt-1">
                   <div>BOT_ID=<span class="text-neon-cyan">{{ botId }}</span></div>
                   <div>BOT_SECRET=<span class="text-neon-cyan">{{ botSecret }}</span></div>