fix(canvas): 生成任务 - 校验视频提示词长度并修复工作流产物ID与供应商错误识别

web/src/lib/model-selection.ts

@@ -101,6 +101,19 @@ export function modelCompatibilityError(config: AiConfig, model: string, require
     return input.imageCount > 0 || input.videoCount > 0 || input.audioCount > 0 ? "音频模型只接受文本或单个角色卡输入" : "";
 }
 
+export function modelPromptLengthError(config: AiConfig, model: string, capability: ModelCapability, prompt: string) {
+    const channel = resolveModelChannel(config, model);
+    const configuredProfile = channel.modelCosts?.find((item) => item.model === modelOptionName(model))?.capabilityConfig;
+    if (!configuredProfile) return "";
+    const profile = modelCapabilityConfigFor(config, model);
+    const maxChars = capability === "text" ? profile.text?.references.promptMaxChars : capability === "image" ? profile.image?.references.promptMaxChars : capability === "video" ? profile.video?.references.promptMaxChars : undefined;
+    if (!maxChars || maxChars <= 0) return "";
+    const actualChars = Array.from(prompt).length;
+    if (actualChars <= maxChars) return "";
+    const label = capability === "text" ? "文本" : capability === "image" ? "图片" : "视频";
+    return `当前${label}模型提示词最多 ${maxChars} 个字符，完整提示词为 ${actualChars} 个字符。系统不会自动截断，请精简当前输入、连线内容或技能上下文后重试`;
+}
+
 export function modelRequestOptions(config: AiConfig, capability: ModelCapability) {
     switch (capability) {
         case "image":

web/src/pages/canvas/use-canvas-generation-executor.ts

@@ -9,7 +9,7 @@ import { isGenerationTaskCapacityError } from "@/lib/canvas/canvas-generation-ba
 import { buildPortraitTexturePrompt } from "@/lib/canvas/canvas-portrait-texture";
 import { resolveCanvasStyleExecution } from "@/lib/canvas/canvas-style-execution";
 import { generationErrorMessage, generationFailureMetadata } from "@/lib/generation-error";
-import { modelCompatibilityError, modelGroupReferenceLimits, modelRequestOptions, type ModelRequirements } from "@/lib/model-selection";
+import { modelCompatibilityError, modelGroupReferenceLimits, modelPromptLengthError, modelRequestOptions, type ModelRequirements } from "@/lib/model-selection";
 import { navigateToSettings } from "@/lib/settings-navigation";
 import type { Skill } from "@/services/api/skills";
 import { skillRuntime } from "@/services/skill-runtime";
@@ -185,6 +185,11 @@ export function useCanvasGenerationExecutor({
                             return;
                         }
                     }
+                    const promptLengthError = mode === "video" ? modelPromptLengthError(generationConfig, generationConfig.model, mode, effectivePrompt) : "";
+                    if (promptLengthError) {
+                        message.error(promptLengthError);
+                        return;
+                    }
                     const generationContext = { ...rawGenerationContext, prompt: effectivePrompt };
                     if (mode === "audio" && generationContext.characterReferences.length) {
                         if (generationContext.characterReferences.length !== 1) {

web/test/canvas-model-policy.test.ts

@@ -3,7 +3,7 @@ import { describe, expect, test } from "bun:test";
 import { canvasConnectionError } from "../src/lib/canvas/canvas-connection-policy";
 import { assertCanvasImageReferenceLimit, buildGenerationConfig, canvasImageReferenceLimitError, resolveCanvasGenerationModel } from "../src/lib/canvas/canvas-project-generation";
 import { defaultModelCapabilityConfig } from "../src/lib/model-capabilities";
-import { groupModelsByDisplayName, inferVideoOperation, modelCompatibilityError, modelGroupReferenceLimits, resolveCompatibleModel, resolveModelGenerationDefaults } from "../src/lib/model-selection";
+import { groupModelsByDisplayName, inferVideoOperation, modelCompatibilityError, modelGroupReferenceLimits, modelPromptLengthError, resolveCompatibleModel, resolveModelGenerationDefaults } from "../src/lib/model-selection";
 import { defaultConfig, normalizeModelOptionValue, type AiConfig, type ModelChannel } from "../src/stores/use-config-store";
 import { CanvasNodeType, type CanvasConnection, type CanvasNodeData } from "../src/types/canvas";
 
@@ -53,6 +53,18 @@ function node(id: string, type: CanvasNodeType, generationMode?: "image" | "vide
 }
 
 describe("逻辑模型选择", () => {
+    test("技能上下文展开后按最终视频模型字符上限拒绝提交", () => {
+        const config = policyConfig();
+        const model = config.videoModels[0]!;
+        config.channels[0]!.modelCosts![0]!.capabilityConfig!.video!.references.promptMaxChars = 10_000;
+
+        const error = modelPromptLengthError(config, model, "video", "镜".repeat(23_142));
+
+        expect(error).toContain("最多 10000 个字符");
+        expect(error).toContain("完整提示词为 23142 个字符");
+        expect(error).toContain("不会自动截断");
+    });
+
     test("图片逻辑模型忽略全局视频时长，不应显示为不支持当前时长", () => {
         const model = "platform::gpt-image-2";
         const channel: ModelChannel = {