feat: generate and edit conversation images across runtimes

Add model-controlled image invocation and read-only runtime assignments. Route image tools through Main so accepted operations retain their originating conversation when chat runtimes change, with saved references, cancellation, and manual recovery.

Keep Node hashing outside browser-shared contracts to restore production builds. Validation includes the production build, typecheck, lint, focused regressions, real Host transport checks, and two successful real image requests. Full UI-driven runtime switching acceptance remains documented as pending.

Release note: 开启图片模型的会话调用后，聊天助手可调用图片生成与编辑工具，Runtime 分配自动管理。图片成果保存在原会话，可继续修改，并独立显示生成状态和取消入口。

src/main/runtime-settings-store.ts

@@ -292,12 +292,14 @@ const storedSettingsSchema = version20StoredSettingsSchema
     modelProfiles: z
       .array(
         currentStoredModelProfileSchema.extend({
+          allowConversationInvocation: z.boolean().optional(),
           requestHeaders: modelRequestHeadersSchema,
           requestBody: modelRequestBodySchema
         })
       )
       .min(1)
-      .max(20)
+      .max(20),
+    defaultImageModelProfileId: z.string().uuid().nullable().optional()
   })
 
 type StoredSettings = z.infer<typeof storedSettingsSchema>
@@ -424,6 +426,7 @@ export type ResolvedRuntimeSettings = {
   apiKey?: string
   modelProfiles: ResolvedModelProfile[]
   defaultModelProfileId: string
+  defaultImageModelProfileId?: string | null
   opencodeModelProfile?: ResolvedModelProfile
   continueModelProfile?: ResolvedModelProfile
   deepseekHarnessModelProfile?: ResolvedModelProfile
@@ -458,6 +461,7 @@ export type RuntimePolicySettings = Pick<
 >
 
 export type ResolvedModelProfile = {
+  allowConversationInvocation?: boolean
   id: string
   name: string
   baseUrl: string
@@ -1599,6 +1603,7 @@ export class RuntimeSettingsStore {
           protocol: effective.protocol,
           authentication: effective.authentication,
           supportsImageInput: effective.supportsImageInput,
+          allowConversationInvocation: profile.allowConversationInvocation ?? false,
           contextWindowTokens: effective.contextWindowTokens,
           maximumOutputTokens: effective.maximumOutputTokens,
           imageGenerationQuality: effective.imageGenerationQuality,
@@ -1619,6 +1624,7 @@ export class RuntimeSettingsStore {
         protocol: profile.protocol,
         authentication: profile.authentication,
         supportsImageInput: profile.supportsImageInput,
+        allowConversationInvocation: profile.allowConversationInvocation ?? false,
         contextWindowTokens: profile.contextWindowTokens,
         maximumOutputTokens: profile.maximumOutputTokens,
         imageGenerationQuality: profile.imageGenerationQuality,
@@ -1704,6 +1710,7 @@ export class RuntimeSettingsStore {
         protocol: resolved.protocol,
         authentication: resolved.authentication,
         supportsImageInput: resolved.supportsImageInput,
+        allowConversationInvocation: profile.allowConversationInvocation ?? false,
         contextWindowTokens: resolved.contextWindowTokens,
         maximumOutputTokens: resolved.maximumOutputTokens,
         imageGenerationQuality:
@@ -1728,6 +1735,7 @@ export class RuntimeSettingsStore {
         protocol: profile.protocol,
         authentication: profile.authentication,
         supportsImageInput: profile.supportsImageInput,
+        allowConversationInvocation: profile.allowConversationInvocation ?? false,
         contextWindowTokens: profile.contextWindowTokens,
         maximumOutputTokens: profile.maximumOutputTokens,
         imageGenerationQuality:
@@ -1860,6 +1868,7 @@ export class RuntimeSettingsStore {
       credentialSource: effective.credentialSource,
       modelProfiles,
       defaultModelProfileId: settings.defaultModelProfileId,
+      defaultImageModelProfileId: settings.defaultImageModelProfileId,
       opencodeModelSource: agent.opencodeBaseUrl
         ? { kind: 'platform' }
         : settings.opencodeModelSource,
@@ -1891,6 +1900,18 @@ export class RuntimeSettingsStore {
     return this.toPublicSettings(await this.load())
   }
 
+  async getSavedModelProfiles(): Promise<Array<Pick<
+    RuntimeSettings['modelProfiles'][number],
+    'id' | 'name' | 'protocol' | 'allowConversationInvocation'
+  >>> {
+    return (await this.load()).modelProfiles.map((profile) => ({
+      id: profile.id,
+      name: profile.name,
+      protocol: profile.protocol,
+      allowConversationInvocation: profile.allowConversationInvocation ?? false
+    }))
+  }
+
   captureRollback(): Promise<RuntimeSettingsRollback> {
     let result: RuntimeSettingsRollback | undefined
     const operation = this.updateQueue.then(async () => {
@@ -1990,6 +2011,7 @@ export class RuntimeSettingsStore {
       modelProfiles,
       defaultModelProfileId: settings.defaultModelProfileId,
       opencodeModelProfile,
+      defaultImageModelProfileId: settings.defaultImageModelProfileId,
       continueModelProfile,
       deepseekHarnessModelProfile,
       ...agent,
@@ -2128,6 +2150,7 @@ export class RuntimeSettingsStore {
               protocol: input.modelProtocol,
               authentication: input.modelAuthentication,
               supportsImageInput: profile.supportsImageInput,
+              allowConversationInvocation: profile.allowConversationInvocation ?? false,
               contextWindowTokens: profile.contextWindowTokens,
               maximumOutputTokens: profile.maximumOutputTokens,
               imageGenerationQuality: input.imageGenerationQuality,
@@ -2143,6 +2166,7 @@ export class RuntimeSettingsStore {
               protocol: profile.protocol,
               authentication: profile.authentication,
               supportsImageInput: profile.supportsImageInput,
+              allowConversationInvocation: profile.allowConversationInvocation ?? false,
               contextWindowTokens: profile.contextWindowTokens,
               maximumOutputTokens: profile.maximumOutputTokens,
               imageGenerationQuality: profile.imageGenerationQuality,
@@ -2197,6 +2221,9 @@ export class RuntimeSettingsStore {
           protocol: profile.protocol,
           authentication: profile.authentication,
           supportsImageInput: profile.supportsImageInput ?? false,
+          allowConversationInvocation:
+            profile.allowConversationInvocation ??
+            existing?.allowConversationInvocation ?? false,
           contextWindowTokens: profile.contextWindowTokens,
           maximumOutputTokens: profile.maximumOutputTokens,
           imageGenerationQuality: profile.imageGenerationQuality,
@@ -2491,6 +2518,9 @@ export class RuntimeSettingsStore {
       modelProfiles,
       defaultModelProfileId,
       opencodeModelSource,
+      defaultImageModelProfileId: input.defaultImageModelProfileId === undefined
+        ? current.defaultImageModelProfileId
+        : input.defaultImageModelProfileId,
       continueModelSource,
       deepseekHarnessModelSource:
         requestedDeepSeekHarnessSource,