Report pending setup state in workspace target resolution

Co-authored-by: Orca <help@stably.ai>

notes/project-first-host-model-change-inventory.md

@@ -508,6 +508,8 @@ Already partially landed:
   known host before a checkout path exists
 - workspace creation host options distinguish pending/error/unsupported setup
   metadata from hosts that have no setup
+- workspace creation target resolution reports `setup-not-ready` when a
+  selected host has non-ready setup metadata
 
 Not complete yet:
 

notes/project-first-host-model-conversation.md

@@ -512,6 +512,8 @@ Already partially landed:
   known host before a checkout path exists
 - workspace creation host options distinguish pending/error/unsupported setup
   metadata from hosts that have no setup
+- workspace creation target resolution reports `setup-not-ready` when a
+  selected host has non-ready setup metadata
 
 Not complete yet:
 

notes/project-first-host-model-handoff.md

@@ -430,6 +430,8 @@ Already partially landed:
   known host before a checkout path exists
 - workspace creation host options distinguish pending/error/unsupported setup
   metadata from hosts that have no setup
+- workspace creation target resolution reports `setup-not-ready` when a
+  selected host has non-ready setup metadata
 
 Still needed:
 

notes/project-first-host-model.md

@@ -791,6 +791,9 @@ Landed so far:
 - Updated workspace creation host options so non-ready setup metadata appears
   with its real pending/error/unsupported state instead of being collapsed into
   a generic "project not set up" row.
+- Updated workspace creation target resolution so selecting a host with
+  non-ready setup metadata reports `setup-not-ready` instead of
+  `project-not-set-up-on-host`.
 - Added tests for local repos, SSH repos, same-provider multi-host grouping,
   no-identity same-name non-grouping, selector cache behavior, persistence
   backfill, repo mutation synchronization, renderer hydration, runtime RPC

src/renderer/src/lib/project-host-workspace-target.test.ts

@@ -155,6 +155,32 @@ describe('project-host workspace target resolution', () => {
     })
   })
 
+  it('reports setup-not-ready when the selected host has pending setup metadata', () => {
+    const repo = makeRepo('orca')
+    const projects = [makeProject('github:stablyai/orca', ['orca'])]
+    const projectHostSetups = [
+      makeSetup('orca', 'github:stablyai/orca', 'local', 'orca'),
+      makeSetup('gpu-pending', 'github:stablyai/orca', 'runtime:gpu', '', {
+        path: '',
+        setupState: 'setting-up',
+        setupMethod: 'provisioned'
+      })
+    ]
+
+    expect(
+      resolveWorkspaceCreationTarget({
+        eligibleRepos: [repo],
+        projects,
+        projectHostSetups,
+        projectId: 'github:stablyai/orca',
+        hostId: 'runtime:gpu'
+      })
+    ).toEqual({
+      status: 'unavailable',
+      reason: 'setup-not-ready'
+    })
+  })
+
   it('reports unavailable when an explicit setup is not ready', () => {
     const repo = makeRepo('orca')
     const projects = [makeProject('github:stablyai/orca', ['orca'])]

src/renderer/src/lib/project-host-workspace-target.ts

@@ -142,6 +142,12 @@ export function resolveWorkspaceCreationTarget(
   }
 
   if (projectId && hostId) {
+    const hostSetup = setups.find(
+      (setup) => setup.projectId === projectId && setup.hostId === hostId
+    )
+    if (hostSetup && !isReadySetup(hostSetup)) {
+      return { status: 'unavailable', reason: 'setup-not-ready' }
+    }
     const target = findReadySetupTarget(
       setups,
       repoById,