feat: 实现 YITAO-REN GALLERY 画廊功能

- 新增 game/images/gallery/ 目录（5 张处理过的图片资源）
  · icon_gallery.png（花朵图标，256x256）
  · photo_pearl.png / photo_monalisa.jpg / photo_corridor.jpg / photo_sleeping.jpg（统一裁切 720x960）
- game/script.rpy: 新增 persistent.gallery_seen 和 gallery_photo4_unlocked 变量
- game/Chapters/Chapter1.rpy: Chapter1_Scene4 开头自动解锁"力学之美"照片
- game/screens.rpy:
  · gallery_panel 改造为右侧侧边栏（340px），含花朵图标入口
  · 新增 yitao_gallery 屏幕（4 张卡片横排，NEW 角标，锁定状态）
  · 新增 gallery_detail 屏幕（左图右文详情页）

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

game/Chapters/Chapter1.rpy

@@ -238,6 +238,7 @@ label Chapter1_Scene3:
 
 label Chapter1_Scene4:
     $ game_period = "after_school"
+    $ gallery_photo4_unlocked = True
     play music "audio/MainMenu.ogg" fadein 2.0
     scene bg classroom wide afterschool with fade
     "{cps=20}【同日放学后·七班教室】"    # system_ "【同日放学后·七班教室】"

game/screens.rpy

@@ -279,6 +279,60 @@ init python:
         period_text = period_map.get(store.game_period, "")
         return "{}年{}月{}日　{}".format(current.year, current.month, current.day, period_text)
 
+    ## 画廊数据与辅助函数
+    GALLERY_PHOTOS = [
+        {
+            "id": "pearl",
+            "file": "images/gallery/photo_pearl.png",
+            "title": "珍珠耳环",
+            "desc": "某个无聊的午后，\n镜子里映出一张陌生的脸。\n古典与现代在此刻奇异地重叠。",
+            "date": "2029.09.05",
+            "always_unlocked": True,
+        },
+        {
+            "id": "monalisa",
+            "file": "images/gallery/photo_monalisa.jpg",
+            "title": "永恒的微笑",
+            "desc": "AI说，你和她很像。\n我觉得，那是在骂我。",
+            "date": "2029.09.05",
+            "always_unlocked": True,
+        },
+        {
+            "id": "corridor",
+            "file": "images/gallery/photo_corridor.jpg",
+            "title": "考前",
+            "desc": "考场门外，时间凝固了一样。\n走廊的灯光把影子拉得很长。",
+            "date": "2029.09.10",
+            "always_unlocked": True,
+        },
+        {
+            "id": "sleeping",
+            "file": "images/gallery/photo_sleeping.jpg",
+            "title": "力学之美",
+            "desc": "一切运动都趋向静止。\n这是物理定律，也是我的日常。\n\n——任懿涛",
+            "date": "2029.10.01",
+            "always_unlocked": False,
+        },
+    ]
+
+    def is_gallery_photo_unlocked(photo):
+        if photo["always_unlocked"]:
+            return True
+        if photo["id"] == "sleeping":
+            return store.gallery_photo4_unlocked
+        return False
+
+    def is_photo_new(photo_id):
+        seen = persistent.gallery_seen
+        if seen is None:
+            return True
+        return photo_id not in seen
+
+    def mark_photo_seen(photo_id):
+        if persistent.gallery_seen is None:
+            persistent.gallery_seen = set()
+        persistent.gallery_seen.add(photo_id)
+
 style window is default
 style say_label is default
 style say_dialogue is default
@@ -516,40 +570,334 @@ screen gallery_panel():
     button:
         xfill True
         yfill True
-        background "#00000077"
+        background "#00000066"
         action Hide("gallery_panel")
 
-    ## 主面板（80% 屏幕：1536×864）
+    ## 右侧侧边栏面板（340×1080）
     frame:
-        xalign 0.5
+        xanchor 1.0
-        yalign 0.5
+        xpos 1920
-        xysize (1536, 864)
+        yanchor 0.0
-        background "#0d0f1eee"
+        ypos 0
-        padding (30, 20, 30, 20)
+        xysize (340, 1080)
+        background "#0d0f1ef0"
+        padding (0, 0, 0, 0)
 
-        ## 右上角：日期 + 关闭按钮
+        vbox:
-        hbox:
+            xfill True
-            xalign 1.0
+            spacing 0
-            yalign 0.0
-            spacing 24
 
-            text get_game_date_str():
+            ## 顶部：日期 + 关闭按钮
-                color "#a8c8f0"
+            frame:
-                size 32
+                xfill True
-                yalign 0.5
+                ysize 72
-                font "fonts/AlibabaPuHuiTi-3-55-Regular.ttf"
+                background None
+                padding (24, 0, 24, 0)
 
-            textbutton "×":
+                hbox:
-                action Hide("gallery_panel")
+                    xfill True
-                text_size 36
+                    yalign 0.5
-                text_color "#a8c8f0"
+                    spacing 8
-                text_hover_color "#ffffff"
+
-                yalign 0.5
+                    text get_game_date_str():
+                        color "#a8c8f0"
+                        size 26
+                        yalign 0.5
+                        font "fonts/AlibabaPuHuiTi-3-55-Regular.ttf"
+
+                    frame:
+                        xfill True
+                        background None
+
+                    textbutton "×":
+                        action Hide("gallery_panel")
+                        text_size 34
+                        text_color "#a8c8f0"
+                        text_hover_color "#ffffff"
+                        yalign 0.5
+
+            ## 分割线
+            frame:
+                xfill True
+                ysize 1
+                background "#ffffff22"
+
+            ## 工具栏标题
+            frame:
+                xfill True
+                background None
+                padding (24, 16, 24, 8)
+
+                text "工具栏":
+                    color "#778899"
+                    size 22
+                    font "fonts/AlibabaPuHuiTi-3-55-Regular.ttf"
+
+            ## 画廊图标按钮
+            button:
+                xalign 0.5
+                ysize 160
+                background None
+                hover_background "#ffffff11"
+                action ShowScreen("yitao_gallery")
+
+                vbox:
+                    xalign 0.5
+                    yalign 0.5
+                    spacing 10
+
+                    frame:
+                        xalign 0.5
+                        xysize (112, 112)
+                        background None
+                        padding (0, 0, 0, 0)
+
+                        add "images/gallery/icon_gallery.png":
+                            xfill True
+                            yfill True
+                            fit "contain"
+
+                    text "画廊":
+                        xalign 0.5
+                        color "#cccccc"
+                        size 22
+                        font "fonts/AlibabaPuHuiTi-3-55-Regular.ttf"
 
     ## ESC 键关闭
     key "game_menu" action Hide("gallery_panel")
 
 
+################################################################################
+## YITAO-REN GALLERY 主画廊屏幕
+################################################################################
+
+screen yitao_gallery():
+    zorder 155
+    modal True
+
+    ## 全屏深色背景
+    frame:
+        xfill True
+        yfill True
+        background "#0a0c1a"
+        padding (0, 0, 0, 0)
+
+        vbox:
+            xfill True
+            yfill True
+            spacing 0
+
+            ## 顶栏（高 80px）
+            frame:
+                xfill True
+                ysize 80
+                background "#0d0f28cc"
+                padding (48, 0, 48, 0)
+
+                hbox:
+                    xfill True
+                    yalign 0.5
+                    spacing 0
+
+                    text "YITAO-REN GALLERY":
+                        color "#c8d8f0"
+                        size 32
+                        yalign 0.5
+                        font "fonts/AlibabaPuHuiTi-3-55-Regular.ttf"
+
+                    frame:
+                        xfill True
+                        background None
+
+                    textbutton "×":
+                        action Hide("yitao_gallery")
+                        text_size 38
+                        text_color "#a8c8f0"
+                        text_hover_color "#ffffff"
+                        yalign 0.5
+
+            ## 照片卡片区（占剩余空间，垂直居中）
+            frame:
+                xfill True
+                yfill True
+                background None
+                padding (0, 0, 0, 0)
+
+                hbox:
+                    xalign 0.5
+                    yalign 0.5
+                    spacing 24
+
+                    for photo in GALLERY_PHOTOS:
+                        $ _pid = photo["id"]
+                        $ _unlocked = is_gallery_photo_unlocked(photo)
+                        $ _is_new = _unlocked and is_photo_new(_pid)
+
+                        ## 单张卡片（白色边框 = NEW）
+                        frame:
+                            xysize (425, 567)
+                            yalign 0.5
+                            background ("#ffffff" if _is_new else "#1a1c2a")
+                            padding ((3, 3, 3, 3) if _is_new else (0, 0, 0, 0))
+
+                            if _unlocked:
+                                button:
+                                    xfill True
+                                    yfill True
+                                    background None
+                                    hover_background "#ffffff14"
+                                    action [Function(mark_photo_seen, _pid), ShowScreen("gallery_detail", photo=photo)]
+
+                                    add photo["file"]:
+                                        xfill True
+                                        yfill True
+                                        fit "cover"
+
+                            else:
+                                ## 未解锁：锁定状态
+                                frame:
+                                    xfill True
+                                    yfill True
+                                    background "#111320"
+                                    padding (0, 0, 0, 0)
+
+                                    text "?":
+                                        xalign 0.5
+                                        yalign 0.5
+                                        color "#445566"
+                                        size 80
+
+                            ## NEW 角标（绝对定位于卡片右上角）
+                            if _is_new:
+                                frame:
+                                    xanchor 1.0
+                                    xpos 422
+                                    yanchor 0.0
+                                    ypos 0
+                                    xysize (60, 28)
+                                    background "#e03030"
+                                    padding (4, 2, 4, 2)
+
+                                    text "NEW":
+                                        xalign 0.5
+                                        yalign 0.5
+                                        color "#ffffff"
+                                        size 16
+                                        bold True
+
+    key "game_menu" action Hide("yitao_gallery")
+
+
+################################################################################
+## 画廊详情屏幕
+################################################################################
+
+screen gallery_detail(photo):
+    zorder 160
+    modal True
+
+    ## 全屏背景
+    frame:
+        xfill True
+        yfill True
+        background "#0a0c1a"
+        padding (0, 0, 0, 0)
+
+        vbox:
+            xfill True
+            yfill True
+            spacing 0
+
+            ## 顶栏（高 72px）
+            frame:
+                xfill True
+                ysize 72
+                background "#0d0f28cc"
+                padding (40, 0, 40, 0)
+
+                textbutton "← YITAO-REN GALLERY":
+                    action Hide("gallery_detail")
+                    text_size 26
+                    text_color "#a8c8f0"
+                    text_hover_color "#ffffff"
+                    yalign 0.5
+
+            ## 主体区域（左图右文）
+            frame:
+                xfill True
+                yfill True
+                background None
+                padding (0, 0, 0, 0)
+
+                hbox:
+                    xfill True
+                    yfill True
+                    spacing 0
+
+                    ## 左栏：图片（55%，xsize 1056）
+                    frame:
+                        xsize 1056
+                        yfill True
+                        background None
+                        padding (0, 0, 0, 0)
+
+                        add photo["file"]:
+                            xalign 0.5
+                            yalign 0.5
+                            fit "contain"
+                            xmaximum 960
+                            ymaximum 1008
+
+                    ## 右栏：文字信息（45%，xsize 864）
+                    frame:
+                        xsize 864
+                        yfill True
+                        background "#0d0f28"
+                        padding (60, 0, 60, 0)
+
+                        vbox:
+                            xfill True
+                            yalign 0.3
+                            spacing 20
+
+                            ## 照片标题
+                            frame:
+                                xfill True
+                                background None
+                                padding (0, 40, 0, 16)
+
+                                text photo["title"]:
+                                    color "#ffffff"
+                                    size 52
+                                    font "fonts/AlibabaPuHuiTi-3-55-Regular.ttf"
+
+                            ## 水平分割线
+                            frame:
+                                xfill True
+                                ysize 1
+                                background "#ffffff44"
+
+                            ## 描述文字
+                            frame:
+                                xfill True
+                                background None
+                                padding (0, 20, 0, 20)
+
+                                text photo["desc"]:
+                                    color "#aaaaaa"
+                                    size 26
+                                    font "fonts/AlibabaPuHuiTi-3-55-Regular.ttf"
+                                    line_spacing 12
+
+                            ## 发布日期
+                            text photo["date"]:
+                                color "#666666"
+                                size 20
+                                font "fonts/AlibabaPuHuiTi-3-55-Regular.ttf"
+
+    key "game_menu" action Hide("gallery_detail")
+
+
 ################################################################################
 ## 标题和游戏菜单屏幕
 ################################################################################

game/script.rpy

@@ -81,6 +81,10 @@ default game_start_year = 2029
 default game_start_month = 9
 default game_start_day = 3   # Day 1 = 2029年9月3日（开学周一）
 
+# ====== 画廊系统变量 ======
+default persistent.gallery_seen = set()   # 已查看的照片 id 集合
+default gallery_photo4_unlocked = False   # "力学之美"照片解锁标志
+
 
 # ====== 可选：总字典管理（便于批量操作） ======
 '''