refactor: narrow web image input v1

packages/host/apiproxy/src/api/host.schema.ts

@@ -3,15 +3,11 @@
  */
 
 import { z } from 'zod'
-import type { ModelModality } from '@deepseek-ai/dsh-llm'
 import type { DirectoryEntry } from './host.ts'
 import type { RequestPayload, ResponseValue } from './rpc-map.ts'
 import type { Wire } from './rpc.schema.ts'
 import { imageMediaTypeSchema } from './sessions.schema.ts'
 
-/** Merge-extensible modality passthrough: declaration merging cannot extend a runtime Zod union. */
-const modalitySchema = z.string() as unknown as z.ZodType<ModelModality>
-
 /** host.describe request payload (empty object literal). */
 export const hostDescribeRequestSchema = z.object({}) satisfies z.ZodType<Wire<RequestPayload<'host.describe'>>>
 
@@ -21,18 +17,8 @@ export const hostDescribeValueSchema = z.object({
   cwd: z.string(),
   provider: z.string().optional(),
   model: z.string().optional(),
-  activeModel: z.object({
-    provider: z.string(),
-    id: z.string(),
-    name: z.string(),
-    description: z.string().optional(),
-    inputModalities: z.array(modalitySchema).optional(),
-    outputModalities: z.array(modalitySchema).optional(),
-  }).optional(),
   imageLimits: z.object({
     maxImageBytes: z.number().int().positive(),
-    maxImagesPerMessage: z.number().int().positive(),
-    maxMessageImageBytes: z.number().int().positive(),
     maxImagePixels: z.number().int().positive(),
     mediaTypes: z.array(imageMediaTypeSchema),
   }).optional(),

packages/host/apiproxy/src/api/host.ts

@@ -5,7 +5,6 @@
 
 import type { RpcRequest, RpcResponse } from './rpc.ts'
 import type { ImageAttachmentLimits } from '@deepseek-ai/dsh-attachment'
-import type { LlmModelInfo } from '@deepseek-ai/dsh-llm/types'
 
 /** One directory row of a listing: a child entry or a breadcrumb ancestor. */
 export interface DirectoryEntry {
@@ -49,8 +48,6 @@ export interface HostApi {
     cwd: string
     provider?: string
     model?: string
-    /** Catalog entry for the active route; absent means its capabilities are unknown. */
-    activeModel?: LlmModelInfo
     /** Resolved authoritative image-upload limits. */
     imageLimits?: ImageAttachmentLimits
     attachedSessions: number

packages/host/apiproxy/src/api/sessions.schema.ts

@@ -210,7 +210,7 @@ export const imageMediaTypeSchema = z.union([
 /** Prompt wire content is intentionally narrower than merge-extensible durable core content. */
 export const promptContentPartSchema = z.discriminatedUnion('type', [
   z.object({ type: z.literal('text'), text: z.string() }),
-  z.object({ type: z.literal('image'), mediaType: imageMediaTypeSchema, data: z.string(), name: z.string().optional(), alt: z.string().optional() }),
+  z.object({ type: z.literal('image'), mediaType: imageMediaTypeSchema, data: z.string(), name: z.string().optional() }),
 ])
 
 /** session.prompt request payload. */

packages/host/apiproxy/src/api/sessions.ts

@@ -162,7 +162,7 @@ export interface SessionSummary {
 /** Browser-submitted prompt content; image bytes are promoted to durable references by the host. */
 export type PromptContentPart =
   | { type: 'text'; text: string }
-  | { type: 'image'; mediaType: ImageMediaType; data: string; name?: string; alt?: string }
+  | { type: 'image'; mediaType: ImageMediaType; data: string; name?: string }
 
 /** Session-domain unary methods (the map keys session.* of RpcMethodMap). */
 export interface SessionsApi {