去掉1500字数限制

backend/internal/http/handler/user_generation.go

@@ -70,7 +70,7 @@ func (h *UserGenerationHandler) Generate(c *gin.Context) {
 		switch {
 		case errors.Is(err, service.ErrUnknownModel):
 			c.JSON(http.StatusNotFound, gin.H{"detail": err.Error()})
-		case errors.Is(err, service.ErrUnsupportedParams), errors.Is(err, service.ErrPromptTooLong):
+		case errors.Is(err, service.ErrUnsupportedParams):
 			c.JSON(http.StatusBadRequest, gin.H{"detail": err.Error()})
 		case errors.Is(err, service.ErrInsufficientFunds):
 			c.JSON(http.StatusPaymentRequired, gin.H{"detail": "积分不足"})
@@ -132,7 +132,7 @@ func (h *UserGenerationHandler) Test(c *gin.Context) {
 		switch {
 		case errors.Is(err, service.ErrUnknownModel):
 			c.JSON(http.StatusNotFound, gin.H{"detail": err.Error()})
-		case errors.Is(err, service.ErrUnsupportedParams), errors.Is(err, service.ErrPromptTooLong):
+		case errors.Is(err, service.ErrUnsupportedParams):
 			c.JSON(http.StatusBadRequest, gin.H{"detail": err.Error()})
 		case errors.Is(err, service.ErrProviderQuota):
 			c.JSON(http.StatusTooManyRequests, gin.H{"detail": err.Error()})

backend/internal/http/handler/v1.go

@@ -316,7 +316,7 @@ func (h *V1Handler) writeV1Error(c *gin.Context, err error, payload map[string]a
 	switch {
 	case errors.Is(err, service.ErrUnknownModel):
 		c.JSON(http.StatusNotFound, gin.H{"detail": err.Error()})
-	case errors.Is(err, service.ErrUnsupportedParams), errors.Is(err, service.ErrPromptTooLong):
+	case errors.Is(err, service.ErrUnsupportedParams):
 		c.JSON(http.StatusBadRequest, gin.H{"detail": err.Error()})
 	case errors.Is(err, service.ErrInsufficientFunds):
 		c.JSON(http.StatusPaymentRequired, gin.H{"detail": err.Error()})

backend/internal/service/v1.go

@@ -14,7 +14,6 @@ import (
 	"sync"
 	"sync/atomic"
 	"time"
-	"unicode/utf8"
 
 	"strconv"
 
@@ -38,7 +37,6 @@ var (
 	ErrInvalidAPIKey       = errors.New("invalid api key")
 	ErrUnknownModel        = errors.New("unknown model")
 	ErrUnsupportedParams   = errors.New("unsupported or unpriced parameters for this model")
-	ErrPromptTooLong       = errors.New("prompt too long (max 1500 characters)")
 	ErrInsufficientFunds   = errors.New("insufficient credits")
 	ErrGenerationPending   = errors.New("generation executor not implemented yet")
 	ErrProviderAuth        = errors.New("provider token invalid or expired")
@@ -59,10 +57,6 @@ var (
 	ErrVideoNotReady    = errors.New("video is not ready yet")
 )
 
-// maxPromptRunes caps prompt length (counted as characters, so Chinese = 1),
-// matching the 画图台 counter. Enforced for both 画图台 and API-key calls.
-const maxPromptRunes = 1500
-
 // maxReferenceImageBytes bounds a single decoded reference image. 8 MB
 // comfortably covers real photos/screenshots; anything larger is almost
 // certainly abuse or a mistake. Mirrors Python core/refs.py.
@@ -945,9 +939,6 @@ func (s *V1Service) prepareImage(ctx context.Context, principal *APIPrincipal, i
 	if modelID == "" || prompt == "" {
 		return nil, "", "", 0, errors.New("model and prompt required")
 	}
-	if utf8.RuneCountInString(prompt) > maxPromptRunes {
-		return nil, "", "", 0, ErrPromptTooLong
-	}
 	modelItem, err := s.models.Get(ctx, modelID)
 	if err != nil {
 		if errors.Is(err, gorm.ErrRecordNotFound) {
@@ -1011,9 +1002,6 @@ func (s *V1Service) prepareVideo(ctx context.Context, principal *APIPrincipal, i
 	if modelID == "" || prompt == "" {
 		return nil, "", "", "", 0, errors.New("model and prompt required")
 	}
-	if utf8.RuneCountInString(prompt) > maxPromptRunes {
-		return nil, "", "", "", 0, ErrPromptTooLong
-	}
 	if duration == "" {
 		return nil, "", "", "", 0, errors.New("duration required")
 	}
@@ -1278,10 +1266,10 @@ const maxTempDeadAccounts = 3
 //     fresh token; if it still auth-fails (or there's nothing to refresh, e.g.
 //     chatgpt's JWT IS the credential), mark the account and fail over.
 //   - 上游临时 temporary → behavior depends on tempFailover:
-//       • tempFailover=false (default): retry the SAME account up to
+//   - tempFailover=false (default): retry the SAME account up to
 //     maxSameAccountAttempts times (not counted); if still failing, STOP
 //     (no fan-out — an upstream-wide blip fails identically everywhere).
-//       • tempFailover=true (adobe): fail over to the next account WITHOUT
+//   - tempFailover=true (adobe): fail over to the next account WITHOUT
 //     penalizing this one (rate-limit/overload isn't the account's fault),
 //     capped at maxTempDeadAccounts accounts so a pool-wide blip can't fan
 //     a single request out across everything.

frontend/src/views/PlaygroundView.vue

@@ -526,9 +526,9 @@ onUnmounted(() => {
       <div>
         <div class="flex items-center justify-between mb-1.5">
           <label class="block text-xs font-medium text-slate-500">提示词</label>
-          <span class="text-[11px] tabular-nums" :class="prompt.length >= 1500 ? 'text-rose-500' : 'text-slate-400'">{{ prompt.length }}/1500</span>
+          <span class="text-[11px] tabular-nums text-slate-400">{{ prompt.length }}</span>
         </div>
-        <textarea v-model="prompt" rows="4" maxlength="1500" class="field resize-none disabled:opacity-60 disabled:cursor-not-allowed"
+        <textarea v-model="prompt" rows="4" class="field resize-none disabled:opacity-60 disabled:cursor-not-allowed"
                   placeholder="描述想要的画面…如：黄昏时分,金色麦田里奔跑的金毛猎犬,电影感"></textarea>
       </div>