- modelInfo: add missing fields (family, release_date, variants), fix 'limits' -> 'limit'
- modelCapabilities: add missing 'interleaved' field with union type
- providerInfo: add missing required fields (env, options)
- providerOptions: add additionalProperties:true, replace 'custom' with 'fetch'
- openaiOptions: fix metadata type to accept any (was string)
- Update comments for composition/API schemas

…SON Schema

- Import modelInfoSchema and providerInfoSchema from @generated/validators
- Delete ~84 lines of inline Zod definitions for Model and Info
- Maintain backwards compatibility (same export names)
- All 544 tests pass, typecheck passes, build succeeds

Part of JSON Schema as source of truth initiative (Session 2)

- Add working code generation examples for Rust (typify, schemafy),
  Python (datamodel-code-generator), and C# (NJsonSchema)
- Replace 'Coming soon' placeholders

Part of JSON Schema as source of truth initiative (Session 3)

- Create oauth.schema.json (OAuth with refresh/access tokens)
- Create apiAuth.schema.json (API key authentication)
- Create wellKnownAuth.schema.json (key + token pair)
- Create auth.schema.json (discriminated union of all auth types)
- Enhance generator to support JSON Schema const keyword (generates z.literal())
- All schemas validated and 544 tests pass

Part of JSON Schema as source of truth initiative

…rom JSON Schema

- Import authSchema, oauthSchema, apiAuthSchema, wellKnownAuthSchema from @generated/validators
- Delete ~33 lines of inline Zod definitions for Auth.Oauth, Auth.Api, Auth.WellKnown, Auth.Info
- Maintain backwards compatibility (same export names)
- All 544 tests pass, typecheck passes, build succeeds

Completes auth schema refactoring (Step 4.4) - JSON Schema is now single source of truth

- Create 10 session-related schemas (sessionInfo, sessionTime, sessionSummary,
  sessionShare, sessionRevert, sessionList, fileDiff, permissionAction,
  permissionRule, permissionRuleset)
- Add pattern constraint support to generator for ID prefix validation
- Refactor session/index.ts, permission/next.ts, snapshot/index.ts to use
  generated validators
- All tests pass (544), typecheck passes, build succeeds

Part of JSON Schema as source of truth initiative

- Create 17 new JSON Schema files for tool execution and permission types:
  - Tool states: toolStatePending, toolStateRunning, toolStateCompleted, toolStateError, toolState
  - Tool part: toolPart
  - File parts: filePart, filePartSource, fileSource, symbolSource, resourceSource, filePartSourceText
  - LSP types: lspPosition, lspRange
  - Permissions: permissionRequest, permissionReply, permissionToolContext

- Refactor TypeScript to use generated validators:
  - message-v2.ts: tool state and file part types now import from @generated/validators
  - permission/next.ts: Request and Reply now import from @generated/validators

- Enhance generator (generate-from-schemas.ts):
  - Add discriminatedUnion detection for oneOf with const discriminator
  - Add integer support (type: integer -> z.number().int())

All 544 tests pass, typecheck passes, build succeeds on 11 platforms.

Part of JSON Schema as source of truth initiative

- Create 20 JSON Schema files for message parts, messages, and errors
- Refactor message-v2.ts to use generated validators from @generated/validators
- Part types: textPart, reasoningPart, snapshotPart, patchPart, agentPart,
  compactionPart, subtaskPart, stepStartPart, stepFinishPart, retryPart, part
- Message types: userMessage, assistantMessage, message
- Error types: apiError, providerAuthError, unknownError, outputLengthError,
  abortedError, messageError
- All 544 tests pass, typecheck passes, build succeeds

Part of JSON Schema as source of truth initiative

- Create agentInfo.schema.json (13 fields matching Agent.Info)
- Create agentModel.schema.json (model selection nested object)
- Update generator to support minimum/maximum constraints
- Refactor agent.ts to use generated validators

Part of JSON Schema as source of truth initiative

- Add 13 event schemas: message events (updated, removed, part.updated, part.removed),
  session events (created, updated, deleted, status), permission events (asked, replied)
- Add sessionStatus schema for idle/retry/busy union type
- Add event.schema.json discriminated union aggregating all event types
- Add globalEvent.schema.json for SSE endpoint wrapper
- Refactor status.ts to use generated sessionStatusSchema
- Refactor server.ts to use generated eventSchema and globalEventSchema