feat: guide brand-new installs through first run

.changeset/eligible-default-model.md

@@ -0,0 +1,5 @@
+---
+"@pymodel/pythinker-code": patch
+---
+
+Pick a model that can hold a conversation as the default instead of whichever one a provider happened to list first.

.changeset/first-run-skip.md

@@ -0,0 +1,5 @@
+---
+"@pymodel/pythinker-code": patch
+---
+
+Allow skipping provider setup during first run and connecting one later from Settings.

.changeset/guided-first-run.md

@@ -0,0 +1,5 @@
+---
+"@pymodel/pythinker-code": minor
+---
+
+Add a guided first-run setup that walks through connecting a provider, choosing a default model, and picking a theme. Signing in with Codex is offered alongside the provider catalog and a custom endpoint.

.changeset/provider-recovery-screen.md

@@ -0,0 +1,5 @@
+---
+"@pymodel/pythinker-code": minor
+---
+
+Show a recovery screen naming what broke when an expired credential or a removed model leaves an already-configured app unable to reach a usable model.

.changeset/stuck-setup-screen.md

@@ -0,0 +1,5 @@
+---
+"@pymodel/pythinker-code": patch
+---
+
+Fix a new install being unable to leave the setup screen after adding a working model provider.

apps/pythinker-code/dist-web/.web-bundle-manifest.json

@@ -1,4 +1,4 @@
 {
- "sourceHash": "61f52b7dee70da78fd65a438890724971dc3bc50b828618503942a9370c1a583",
- "sourceFileCount": 391
+ "sourceHash": "c0467bba2e2a45e454620071a737e480cf4529043db69b60033d708f9b7d5905",
+ "sourceFileCount": 398
 }