feat(llm): add per-provider retry policies

packages/ui/tui/src/index.ts

@@ -2298,8 +2298,9 @@ export function createTuiChat(
       }
       case 'llm/retry': {
         clearStreaming()
+        const retryLimit = event.data.mode === 'always' ? '∞' : String(event.data.maxRetries)
         appendNotice(
-          `Retrying model request (${event.data.retry}/${event.data.maxRetries}) in ${event.data.delayMs}ms: ${event.data.failure.message}`,
+          `Retrying model request (${event.data.retry}/${retryLimit}) in ${event.data.delayMs}ms: ${event.data.failure.message}`,
           'warning',
         )
         break

packages/ui/tui/tests/snapshots/retry-cancelled.expected.txt

@@ -21,7 +21,7 @@ buffer
 7| "▌ "
   style 0-0 fg=bright-blue
 8| <blank>
-9| " Retrying model request (1/2) in 1000ms: temporary transport failure                            "
+9| " Retrying model request (1/∞) in 1000ms: temporary transport failure                            "
   style 1-67 fg=yellow
 10| <blank>
 11| " Turn cancelled.                                                                                "

packages/ui/tui/tests/tui.snapshot.ts

@@ -269,6 +269,8 @@ describe('TUI terminal-state snapshots', () => {
       harness.session.append('llm/retry', {
         turn: 1,
         step: 1,
+        provider: 'mock',
+        mode: 'normal',
         retry: 1,
         maxRetries: 2,
         delayMs: 500,
@@ -297,8 +299,9 @@ describe('TUI terminal-state snapshots', () => {
       harness.session.append('llm/retry', {
         turn: 1,
         step: 1,
+        provider: 'mock',
+        mode: 'always',
         retry: 1,
-        maxRetries: 2,
         delayMs: 1_000,
         failure: { message: 'temporary transport failure', code: 'TRANSPORT' },
       })

packages/ui/tui/tests/tui.spec.ts

@@ -1290,6 +1290,8 @@ describe('pi-tui chat lifecycle and transcript', () => {
     result.session.append('llm/retry', {
       turn: 1,
       step: 1,
+      provider: 'mock',
+      mode: 'normal',
       retry: 1,
       maxRetries: 2,
       delayMs: 500,
@@ -1322,6 +1324,8 @@ describe('pi-tui chat lifecycle and transcript', () => {
     result.session.append('llm/retry', {
       turn: 1,
       step: 1,
+      provider: 'mock',
+      mode: 'normal',
       retry: 1,
       maxRetries: 2,
       delayMs: 500,
@@ -1330,6 +1334,8 @@ describe('pi-tui chat lifecycle and transcript', () => {
     result.session.append('llm/retry', {
       turn: 1,
       step: 2,
+      provider: 'mock',
+      mode: 'normal',
       retry: 2,
       maxRetries: 2,
       delayMs: 1_000,