apps/server/src/provider/ClaudeModelCatalog.test.ts              |  56 +++++
 apps/server/src/provider/ClaudeModelCatalog.ts                   |  67 ++++--
 apps/server/src/provider/Layers/CodexProvider.ts                 |  44 ++--
 apps/server/src/provider/Layers/GrokProvider.ts                  |   3 +-
 apps/server/src/provider/providerSnapshot.test.ts                |  21 ++
 apps/server/src/provider/providerSnapshot.ts                     |  23 +-
 apps/web/src/components/settings/CustomModelEditor.tsx           | 387 ++++++++++++++++++++++++++++++++
 apps/web/src/components/settings/ProviderInstanceCard.test.ts    |  43 +++-
 apps/web/src/components/settings/ProviderInstanceCard.tsx        |  51 +++--
 apps/web/src/components/settings/ProviderModelsSection.tsx       | 103 ++++++---
 apps/web/src/components/settings/customModelEditor.logic.test.ts | 259 +++++++++++++++++++++
 apps/web/src/components/settings/customModelEditor.logic.ts      | 258 +++++++++++++++++++++
 apps/web/src/modelSelection.ts                                   |  50 ++---
 docs/user/composer.md                                            |   6 +
 packages/contracts/src/model.ts                                  |  16 ++
 packages/contracts/src/settings.test.ts                          |  34 +++
 packages/contracts/src/settings.ts                               |  25 ++-
 packages/shared/src/model.test.ts                                |  52 +++++
 packages/shared/src/model.ts                                     |  75 ++++++-
 19 files changed, 1423 insertions(+), 150 deletions(-)