feat: add agent ID/name resolution and provider/model syntax support

packages/cli/tests/05-agent-run.test.ts

@@ -130,6 +130,17 @@ try {
     console.log('✓ run --provider flag is accepted\n')
   }
 
+  // Test 6b: run --provider provider/model syntax is accepted
+  {
+    console.log('Test 6b: run --provider provider/model syntax is accepted')
+    const result =
+      await $`PASEO_HOST=localhost:${port} PASEO_HOME=${paseoHome} npx paseo run --provider codex/gpt-5.4 "test prompt"`.nothrow()
+    const output = result.stdout + result.stderr
+    assert(!output.includes('unknown option'), 'should accept provider/model syntax')
+    assert(!output.includes('error: option'), 'should not have option parsing error')
+    console.log('✓ run --provider provider/model syntax is accepted\n')
+  }
+
   // Test 7: run --mode flag is accepted
   {
     console.log('Test 7: run --mode flag is accepted')
@@ -199,6 +210,17 @@ try {
     console.log('✓ Combined flags work together\n')
   }
 
+  // Test 12b: conflicting provider/model syntax is rejected before connect
+  {
+    console.log('Test 12b: conflicting provider/model syntax is rejected')
+    const result =
+      await $`PASEO_HOST=localhost:${port} PASEO_HOME=${paseoHome} npx paseo run --provider codex/gpt-5.4 --model gpt-5.5 "test prompt"`.nothrow()
+    assert.notStrictEqual(result.exitCode, 0, 'should fail for conflicting model inputs')
+    const output = result.stdout + result.stderr
+    assert(output.includes('Conflicting model values provided'), 'should explain conflicting model inputs')
+    console.log('✓ conflicting provider/model syntax is rejected\n')
+  }
+
   // Test 13: paseo --help shows run command
   {
     console.log('Test 13: paseo --help shows run command')

packages/cli/tests/21-run-output-schema-helper.test.ts

@@ -2,6 +2,7 @@
 
 import assert from 'node:assert'
 import {
+  resolveProviderAndModel,
   resolveStructuredResponseMessage,
   type StructuredResponseTimelineClient,
 } from '../src/commands/agent/run.ts'
@@ -94,4 +95,32 @@ console.log('=== Run Output Schema Helper Tests ===\n')
   console.log('✓ returns null when timeline fetch throws')
 }
 
+// Test 5: Provider/model slash syntax resolves both values.
+{
+  const result = resolveProviderAndModel({ provider: 'codex/gpt-5.4' })
+  assert.deepStrictEqual(result, {
+    provider: 'codex',
+    model: 'gpt-5.4',
+  })
+  console.log('✓ resolves provider/model slash syntax')
+}
+
+// Test 6: Explicit matching --model coexists with slash syntax.
+{
+  const result = resolveProviderAndModel({ provider: 'codex/gpt-5.4', model: 'gpt-5.4' })
+  assert.deepStrictEqual(result, {
+    provider: 'codex',
+    model: 'gpt-5.4',
+  })
+  console.log('✓ accepts matching explicit model with slash syntax')
+}
+
+// Test 7: Conflicting --model is rejected.
+{
+  assert.throws(() => resolveProviderAndModel({ provider: 'codex/gpt-5.4', model: 'gpt-5.5' }), {
+    message: 'Conflicting model values provided',
+  })
+  console.log('✓ rejects conflicting explicit model with slash syntax')
+}
+
 console.log('\n=== All helper tests passed ===')

packages/cli/tests/29-agent-id-resolution.test.ts

@@ -0,0 +1,44 @@
+#!/usr/bin/env npx tsx
+
+import assert from 'node:assert'
+import { resolveAgentId } from '../src/utils/client.js'
+
+console.log('=== Agent ID Resolution Tests ===\n')
+
+const agents = [
+  { id: 'abc1234-full-agent-id', title: 'Build docs' },
+  { id: 'def5678-other-agent-id', title: 'Fix archive flow' },
+  { id: '987zyxw-third-agent-id', title: 'Review PR' },
+]
+
+{
+  console.log('Test 1: exact ID match resolves')
+  assert.strictEqual(resolveAgentId('abc1234-full-agent-id', agents), 'abc1234-full-agent-id')
+  console.log('✓ exact ID match resolves\n')
+}
+
+{
+  console.log('Test 2: ID prefix resolves')
+  assert.strictEqual(resolveAgentId('def5678', agents), 'def5678-other-agent-id')
+  console.log('✓ ID prefix resolves\n')
+}
+
+{
+  console.log('Test 3: exact name match resolves case-insensitively')
+  assert.strictEqual(resolveAgentId('fix archive flow', agents), 'def5678-other-agent-id')
+  console.log('✓ exact name match resolves case-insensitively\n')
+}
+
+{
+  console.log('Test 4: partial name match resolves when unique')
+  assert.strictEqual(resolveAgentId('review', agents), '987zyxw-third-agent-id')
+  console.log('✓ partial name match resolves when unique\n')
+}
+
+{
+  console.log('Test 5: missing agent returns null')
+  assert.strictEqual(resolveAgentId('does not exist', agents), null)
+  console.log('✓ missing agent returns null\n')
+}
+
+console.log('=== All agent ID resolution tests passed ===')