激光材料数据平台 1.3.0

公开数据看板、四位 Key 录入面板、管理后台与三级权限、动态字段配置、
PostgreSQL/SQLite 双支持、数据库备份，以及本版新增的成品图上传与预览。

图片相关：
- 录入表单支持相册选图与手机端直接拍照，每条记录最多 6 张
- 浏览器内压缩到最长边 1600 并剥离 EXIF，入库统一为 JPG/PNG
- 二进制直接入库，现有备份自动覆盖图片，部署无需新增卷
- 详情页缩略图宫格与全屏 lightbox，公开看板同样可见

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

templates/_record_fields.html

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+<section class="form-section"><div class="form-section-head"><span>01</span><div><h3>实验与材料</h3><p>用于识别本次测试和材料样品</p></div></div><div class="form-grid">
+  <label>实验 ID <em>*</em><input name="experiment_id" maxlength="100" placeholder="例如 LAS-2026-001" required></label>
+  <label>测试日期 <em>*</em><input type="date" name="test_date" required></label>
+  <label>材料大类 <em>*</em><input name="material_category" maxlength="100" placeholder="例如 木材" required></label>
+  <label>材料名称 / 型号 <em>*</em><input name="material_name" maxlength="200" placeholder="例如 椴木板 A3" required></label>
+  <label>材料厚度 (mm) <em>*</em><input type="number" name="material_thickness" min="0.000001" step="any" required></label>
+</div></section>
+<section class="form-section optional-section"><div class="form-section-head"><span>02</span><div><h3>材料物理特性 <b>均为可选</b></h3><p>未测试的物性参数可以留空</p></div></div><div class="form-grid">
+  <label>表观密度 (g/cm³) <small>可选</small><input type="number" name="apparent_density" min="0" step="any"></label>
+  <label>355nm 紫外吸收率 (%) <small>可选</small><input type="number" name="uv_absorption_355nm" min="0" max="100" step="any"></label>
+  <label>含水率 (%) <small>可选</small><input type="number" name="moisture_content" min="0" max="100" step="any"></label>
+  <label>热导率 (W/(m·K)) <small>可选</small><input type="number" name="thermal_conductivity" min="0" step="any"></label>
+  <label>初始分解温度 (℃) <small>可选</small><input type="number" name="initial_decomposition_temp" step="any"></label>
+  <label>熔点 / 气化温度 (℃) <small>可选</small><input type="number" name="melting_vaporization_temp" step="any"></label>
+  <label>比热容 (J/(kg·K)) <small>可选</small><input type="number" name="specific_heat_capacity" min="0" step="any"></label>
+  <label>残炭率 (%) <small>可选</small><input type="number" name="carbon_residue_rate" min="0" max="100" step="any"></label>
+  <label>表面粗糙度 (μm) <small>可选</small><input type="number" name="surface_roughness" min="0" step="any"></label>
+  <label>硬度 (邵氏/HV) <small>可选</small><input type="number" name="hardness" min="0" step="any"></label>
+</div></section>
+<section class="form-section"><div class="form-section-head"><span>03</span><div><h3>激光雕刻参数</h3><p>设备输出与扫描设置</p></div></div><div class="form-grid">
+  <label>实际输出功率 (W) <em>*</em><input type="number" name="actual_output_power" min="0" step="any" required></label>
+  <label>设备显示电流 (A) <em>*</em><input type="number" name="display_current" min="0" step="any" required></label>
+  <label>扫描速度 (mm/s) <em>*</em><input type="number" name="scanning_speed" min="0.000001" step="any" required></label>
+  <label>脉冲频率 (kHz) <em>*</em><input type="number" name="pulse_frequency" min="0" step="any" required></label>
+  <label>脉冲脉宽 (μs) <em>*</em><input type="number" name="pulse_width" min="0" step="any" required></label>
+  <label>离焦量 (mm) <em>*</em><input type="number" name="defocus_amount" step="any" required></label>
+  <label>扫描线间距 (mm) <em>*</em><input type="number" name="scan_line_spacing" min="0.000001" step="any" required></label>
+  <label>填充方式 <em>*</em><input name="filling_method" maxlength="100" placeholder="例如 双向填充" required></label>
+  <label>加工尺寸 (mm×mm) <em>*</em><input name="processing_size" maxlength="100" placeholder="例如 20×20" required></label>
+</div></section>
+<section class="form-section"><div class="form-section-head"><span>04</span><div><h3>实验结果</h3><p>加工结果、质量评分与备注</p></div></div><div class="form-grid">
+  <label>是否切透 <em>*</em><select name="is_cut_through" required><option value="">请选择</option><option value="true">是（1）</option><option value="false">否（0）</option></select></label>
+  <label>碳化边宽度 (mm) <em>*</em><input type="number" name="carbonized_edge_width" min="0" step="any" required></label>
+  <label>蚀刻深度 (μm) <em>*</em><input type="number" name="etching_depth" min="0" step="any" required></label>
+  <label>是否起火 / 阴燃 <em>*</em><select name="is_fire_smolder" required><option value="">请选择</option><option value="true">是（1）</option><option value="false">否（0）</option></select></label>
+  <label>图案清晰度评分 (0-10) <em>*</em><input type="number" name="pattern_clarity_score" min="0" max="10" step="0.1" required></label>
+  <label>呈现均衡性评分 (0-10) <em>*</em><input type="number" name="presentation_balance_score" min="0" max="10" step="0.1" required></label>
+  <label>成品图文件名 <em>*</em><input name="finished_image_filename" maxlength="255" placeholder="例如 LAS-2026-001.jpg" required></label>
+  <label class="span-2">备注 <em>*</em><textarea name="remarks" maxlength="5000" rows="4" placeholder="记录实验现象或其他说明" required></textarea></label>
+</div></section>
+<section class="form-section"><div class="form-section-head"><span>05</span><div><h3>成品图片 <b>可选</b></h3><p>可从相册选择或直接拍照，最多 6 张，提交后可在详情中放大查看</p></div></div><div class="image-uploader" id="recordImages"></div></section>
+<section class="form-section custom-fields-section" id="customFieldsSection" hidden><div class="form-section-head"><span>06</span><div><h3>扩展数据</h3><p>由管理员配置的附加数据字段</p></div></div><div class="form-grid" id="customFieldsGrid"></div></section>