feat: 新增3个思想实验室项目，完善私有剪贴板授权与上传功能，添加配套测试脚本

1. 新增怀旧弹珠台、人性与投资、穿越三体、四维空间四个思想实验室项目
2. 为私有剪贴板添加业务层授权校验，优化上传进度显示与鉴权失败处理
3. 新增多个调试与单元测试脚本，覆盖三体积分、弹珠台物理、集成测试等场景
4. 补全穿越三体项目的完整HTML页面资源

dev_test_scripts/debug/debug_retro_pinball_arch_search.js

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+/**
+ * 调试：retro_pinball 拱形导轨几何搜索
+ * 目的：找到一组 ARCH（cx,cy,r,a0,a1），让满力发射的球能绕弧 -> 左侧落入 -> 静止落球区
+ * 运行：node dev_test_scripts/debug/debug_retro_pinball_arch_search.js
+ */
+'use strict'
+
+const fs = require('fs')
+const path = require('path')
+const vm = require('vm')
+
+const HTML_PATH = path.join(__dirname, '..', '..', 'public', 'tools', 'thought_lab', 'labs', 'retro_pinball', 'index.html')
+
+const html = fs.readFileSync(HTML_PATH, 'utf-8')
+const grab = (a, b) => {
+  const s = html.indexOf(a), e = html.indexOf(b)
+  if (s < 0 || e < 0 || e <= s) throw new Error('未找到标记块: ' + a)
+  return html.slice(s, e)
+}
+const code =
+  grab('/* ==PHYSICS_CORE_START== */', '/* ==PHYSICS_CORE_END== */') + '\n' +
+  grab('/* ==TABLE_GEOM_START== */', '/* ==TABLE_GEOM_END== */')
+
+const sandbox = { Math, console }
+vm.createContext(sandbox)
+vm.runInContext(code, sandbox)
+const PC = sandbox.PhysicsCore
+const { BALL_R, G_PX, SPRING_X, SPRING_TOP, LANE_X, buildTableStatics, slotIndexAt, SLOT_X0, SLOT_X1 } = sandbox
+
+const DT = 1 / 360
+function defaultParams() {
+  return {
+    g: G_PX * Math.sin(14 * Math.PI / 180),
+    e: 0.55, mu: 0.12, airK: 0.02, rollR: 0.25,
+    restV: 50, iterations: 8, slop: 0.3, correction: 0.8, maxV: 4200
+  };
+}
+
+// 三点定圆
+function fitCircle(p1, p2, p3) {
+  const [x1, y1] = p1, [x2, y2] = p2, [x3, y3] = p3
+  const d = 2 * (x1 * (y2 - y3) + x2 * (y3 - y1) + x3 * (y1 - y2))
+  if (Math.abs(d) < 1e-9) return null
+  const ux = ((x1 * x1 + y1 * y1) * (y2 - y3) + (x2 * x2 + y2 * y2) * (y3 - y1) + (x3 * x3 + y3 * y3) * (y1 - y2)) / d
+  const uy = ((x1 * x1 + y1 * y1) * (x3 - x2) + (x2 * x2 + y2 * y2) * (x1 - x3) + (x3 * x3 + y3 * y3) * (x2 - x1)) / d
+  const r = Math.hypot(x1 - ux, y1 - uy)
+  return { cx: ux, cy: uy, r: r }
+}
+const deg = a => a * 180 / Math.PI
+function angleOf(c, p) { return deg(Math.atan2(p[1] - c.cy, p[0] - c.cx)) }
+
+// 候选：三点（左出口 / 弧顶 / 右端），右端放在发射道上方，让球顺势切入
+// laneTop = 发射道左壁顶 (LANE_X,190)；右端在右外壁 x=442 附近
+const candidates = []
+function addCandidate(leftExit, top, rightEnd, label) {
+  const c = fitCircle(leftExit, top, rightEnd)
+  if (!c) return
+  // 角度范围：从右端 -> 顶部 -> 左出口（逆时针，y 向下故角度递减）
+  let aR = angleOf(c, rightEnd)
+  let aT = angleOf(c, top)
+  let aL = angleOf(c, leftExit)
+  // 归一化：弧要从左出口经弧顶(-90°)扫到右端，需 aL < -90 < aR（角度递增）
+  while (aL > aR) aL -= 360
+  candidates.push({ label, arch: { cx: c.cx, cy: c.cy, r: c.r, a0: aL, a1: aR }, _top: aT, c })
+}
+// 右端扫过发射道：从 (442,180) 到 (442,230)，左出口落在钉阵左侧，顶部留 >=30 余量
+addCandidate([56, 330], [230, 42], [442, 180], 'C1 右端(442,180)')
+addCandidate([56, 330], [235, 45], [442, 200], 'C2 右端(442,200)')
+addCandidate([60, 340], [235, 48], [442, 210], 'C3 右端(442,210)')
+addCandidate([60, 340], [240, 50], [442, 220], 'C4 右端(442,220)')
+addCandidate([50, 320], [225, 40], [442, 190], 'C5 右端(442,190)')
+addCandidate([56, 335], [230, 44], [440, 195], 'C6 右端(440,195)')
+
+function simulate(arch, v0, seconds, seedVx) {
+  sandbox.ARCH = arch
+  const table = buildTableStatics(5, 1)
+  const b = PC.createBall(SPRING_X, SPRING_TOP - BALL_R, BALL_R)
+  b.vy = -v0; b.vx = seedVx || 0
+  const tr = { minY: 1e9, enteredLeft: false, nan: false }
+  for (let t = 0; t < seconds; t += DT) {
+    PC.stepWorld([b], table.statics, defaultParams(), DT)
+    tr.minY = Math.min(tr.minY, b.y)
+    if (b.x < 90 && b.y > 200 && b.y < 450) tr.enteredLeft = true
+    if (!isFinite(b.x) || !isFinite(b.y)) { tr.nan = true; break }
+  }
+  tr.b = b
+  tr.sp = Math.hypot(b.vx, b.vy)
+  tr.inField = b.x >= SLOT_X0 && b.x <= SLOT_X1
+  tr.slot = slotIndexAt(b.x, b.y)
+  return tr
+}
+
+for (const cd of candidates) {
+  const a = cd.arch
+  const tr = simulate(a, 2900, 10, 5)
+  const topOk = tr.minY < 90
+  const ok = !tr.nan && topOk && tr.enteredLeft && tr.inField && tr.sp < 30
+  console.log(`${ok ? '★' : ' '} ${cd.label} cx=${a.cx.toFixed(0)} cy=${a.cy.toFixed(0)} r=${a.r.toFixed(0)} a:[${a.a0.toFixed(0)}..${a.a1.toFixed(0)}] topAng=${cd._top.toFixed(0)}`)
+  console.log(`     minY=${tr.minY.toFixed(0)} enteredLeft=${tr.enteredLeft} final=(${tr.b.x.toFixed(0)},${tr.b.y.toFixed(0)}) sp=${tr.sp.toFixed(1)} inField=${tr.inField} slot=${tr.slot} nan=${tr.nan}`)
+}

dev_test_scripts/debug/debug_retro_pinball_arch_sweep.js

@@ -0,0 +1,83 @@
+/**
+ * 调试：retro_pinball 拱形候选的力度扫描 + 精确参数输出
+ * 运行：node dev_test_scripts/debug/debug_retro_pinball_arch_sweep.js
+ */
+'use strict'
+
+const fs = require('fs')
+const path = require('path')
+const vm = require('vm')
+
+const HTML_PATH = path.join(__dirname, '..', '..', 'public', 'tools', 'thought_lab', 'labs', 'retro_pinball', 'index.html')
+const html = fs.readFileSync(HTML_PATH, 'utf-8')
+const grab = (a, b) => {
+  const s = html.indexOf(a), e = html.indexOf(b)
+  if (s < 0 || e < 0 || e <= s) throw new Error('未找到标记块: ' + a)
+  return html.slice(s, e)
+}
+const code = grab('/* ==PHYSICS_CORE_START== */', '/* ==PHYSICS_CORE_END== */') + '\n' + grab('/* ==TABLE_GEOM_START== */', '/* ==TABLE_GEOM_END== */')
+const sandbox = { Math, console }
+vm.createContext(sandbox)
+vm.runInContext(code, sandbox)
+const PC = sandbox.PhysicsCore
+const { BALL_R, G_PX, SPRING_X, SPRING_TOP, LANE_X, buildTableStatics, slotIndexAt, SLOT_X0, SLOT_X1 } = sandbox
+
+const DT = 1 / 360
+function params() {
+  return { g: G_PX * Math.sin(14 * Math.PI / 180), e: 0.55, mu: 0.12, airK: 0.02, rollR: 0.25, restV: 50, iterations: 8, slop: 0.3, correction: 0.8, maxV: 4200 };
+}
+function fitCircle(p1, p2, p3) {
+  const [x1, y1] = p1, [x2, y2] = p2, [x3, y3] = p3
+  const d = 2 * (x1 * (y2 - y3) + x2 * (y3 - y1) + x3 * (y1 - y2))
+  const ux = ((x1 * x1 + y1 * y1) * (y2 - y3) + (x2 * x2 + y2 * y2) * (y3 - y1) + (x3 * x3 + y3 * y3) * (y1 - y2)) / d
+  const uy = ((x1 * x1 + y1 * y1) * (x3 - x2) + (x2 * x2 + y2 * y2) * (x1 - x3) + (x3 * x3 + y3 * y3) * (x2 - x1)) / d
+  return { cx: ux, cy: uy, r: Math.hypot(x1 - ux, y1 - uy) }
+}
+const deg = a => a * 180 / Math.PI
+function makeArch(leftExit, top, rightEnd) {
+  const c = fitCircle(leftExit, top, rightEnd)
+  let aR = deg(Math.atan2(rightEnd[1] - c.cy, rightEnd[0] - c.cx))
+  let aL = deg(Math.atan2(leftExit[1] - c.cy, leftExit[0] - c.cx))
+  while (aL > aR) aL -= 360
+  return { cx: c.cx, cy: c.cy, r: c.r, a0: aL, a1: aR }
+}
+
+function simulate(arch, v0, seedVx) {
+  sandbox.ARCH = arch
+  const table = buildTableStatics(5, 1)
+  const b = PC.createBall(SPRING_X, SPRING_TOP - BALL_R, BALL_R)
+  b.vy = -v0; b.vx = seedVx || 0
+  let minY = 1e9, enteredLeft = false, nan = false
+  for (let t = 0; t < 10; t += DT) {
+    PC.stepWorld([b], table.statics, params(), DT)
+    minY = Math.min(minY, b.y)
+    if (b.x < 90 && b.y > 200 && b.y < 450) enteredLeft = true
+    if (!isFinite(b.x) || !isFinite(b.y)) { nan = true; break }
+  }
+  const sp = Math.hypot(b.vx, b.vy)
+  return { minY, enteredLeft, nan, x: b.x, y: b.y, sp, inField: b.x >= SLOT_X0 && b.x <= SLOT_X1, slot: slotIndexAt(b.x, b.y), fellBackLane: b.x > LANE_X };
+}
+
+// 聚焦最优候选 C4，输出精确值
+const CHOSEN = { leftExit: [60, 340], top: [240, 50], rightEnd: [442, 220] }
+const arch = makeArch(CHOSEN.leftExit, CHOSEN.top, CHOSEN.rightEnd)
+console.log('选中拱形精确参数:')
+console.log(`  cx=${arch.cx.toFixed(3)} cy=${arch.cy.toFixed(3)} r=${arch.r.toFixed(3)} a0=${arch.a0.toFixed(3)} a1=${arch.a1.toFixed(3)}`)
+console.log(`  左出口=(${CHOSEN.leftExit}) 弧顶=(${CHOSEN.top}) 右端=(${CHOSEN.rightEnd})`)
+console.log('')
+console.log('力度扫描（seedVx=5）:')
+const powers = [900, 1200, 1500, 1800, 2100, 2400, 2700, 2900, 3200]
+for (const v0 of powers) {
+  const r = simulate(arch, v0, 5)
+  const tag = r.nan ? 'NaN!' : r.fellBackLane ? '落回发射道' : r.enteredLeft ? '绕弧左侧落入' : '其他'
+  console.log(`  v0=${v0}  minY=${r.minY.toFixed(0)}  ${tag}  final=(${r.x.toFixed(0)},${r.y.toFixed(0)}) sp=${r.sp.toFixed(0)} slot=${r.slot}`)
+}
+console.log('')
+console.log('满力微扰扫描（v0=2900，落点分布）:')
+const slots = {}
+for (let sv = -8; sv <= 8; sv += 2) {
+  const r = simulate(arch, 2900, sv)
+  slots[r.slot] = (slots[r.slot] || 0) + 1
+  console.log(`  seedVx=${sv}  落点=(${r.x.toFixed(0)},${r.y.toFixed(0)}) slot=${r.slot} enteredLeft=${r.enteredLeft}`)
+}
+console.log('  落坑分布:', JSON.stringify(slots))

dev_test_scripts/debug/debug_retro_pinball_launch.js

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+/**
+ * 调试：retro_pinball 满力发射轨迹追踪
+ * 目的：定位能量增益 bug（理论上满力发射到不了顶部，实测 minY=28）
+ * 运行：node dev_test_scripts/debug/debug_retro_pinball_launch.js
+ */
+'use strict'
+
+const fs = require('fs')
+const path = require('path')
+const vm = require('vm')
+
+const HTML_PATH = path.join(__dirname, '..', '..', 'public', 'tools', 'thought_lab', 'labs', 'retro_pinball', 'index.html')
+
+const html = fs.readFileSync(HTML_PATH, 'utf-8')
+const grab = (a, b) => {
+  const s = html.indexOf(a), e = html.indexOf(b)
+  if (s < 0 || e < 0 || e <= s) throw new Error('未找到标记块: ' + a)
+  return html.slice(s, e)
+}
+const code =
+  grab('/* ==PHYSICS_CORE_START== */', '/* ==PHYSICS_CORE_END== */') + '\n' +
+  grab('/* ==TABLE_GEOM_START== */', '/* ==TABLE_GEOM_END== */')
+
+const sandbox = { Math, console }
+vm.createContext(sandbox)
+vm.runInContext(code, sandbox)
+const PC = sandbox.PhysicsCore
+const { BALL_R, G_PX, SPRING_X, SPRING_TOP, buildTableStatics } = sandbox
+
+const DT = 1 / 360
+function defaultParams() {
+  return {
+    g: G_PX * Math.sin(14 * Math.PI / 180),
+    e: 0.55, mu: 0.12, airK: 0.02, rollR: 0.25,
+    restV: 50, iterations: 8, slop: 0.3, correction: 0.8, maxV: 4200
+  };
+}
+
+const gEff = G_PX * Math.sin(14 * Math.PI / 180)
+console.log('g_eff =', gEff.toFixed(1), 'px/s^2')
+
+const table = buildTableStatics(5, 1)
+const b = PC.createBall(SPRING_X, SPRING_TOP - BALL_R, BALL_R)
+b.vy = -2900
+b.vx = 5
+const balls = [b]
+
+let maxSp = 0, maxSpAt = ''
+let minY = 1e9, minYAt = ''
+let maxEnergy = -1e9, maxEnergyAt = ''
+const startEnergy = 0.5 * (b.vx * b.vx + b.vy * b.vy) + gEff * b.y
+console.log('初始动能+势能基准 E0 =', startEnergy.toFixed(0))
+
+for (let i = 0; i < 360 * 3; i++) {
+  PC.stepWorld(balls, table.statics, defaultParams(), DT)
+  const sp = Math.hypot(b.vx, b.vy)
+  const t = ((i + 1) / 360).toFixed(2)
+  // 机械能 = 动能 + 势能（y 向下为正，势能取 g*y，越高 y 越小能量越小）
+  const E = 0.5 * sp * sp + gEff * b.y
+  if (sp > maxSp) { maxSp = sp; maxSpAt = `t=${t} pos=(${b.x.toFixed(1)},${b.y.toFixed(1)})` }
+  if (b.y < minY) { minY = b.y; minYAt = `t=${t} pos=(${b.x.toFixed(1)},${b.y.toFixed(1)}) sp=${sp.toFixed(0)}` }
+  if (E > maxEnergy) { maxEnergy = E; maxEnergyAt = `t=${t} pos=(${b.x.toFixed(1)},${b.y.toFixed(1)}) sp=${sp.toFixed(0)}` }
+  if (i % 36 === 0) {
+    console.log(`t=${t}  pos=(${b.x.toFixed(1)},${b.y.toFixed(1)})  v=(${b.vx.toFixed(0)},${b.vy.toFixed(0)})  sp=${sp.toFixed(0)}  E=${E.toFixed(0)}`)
+  }
+}
+console.log('----')
+console.log('maxSp =', maxSp.toFixed(1), '@', maxSpAt)
+console.log('minY =', minY.toFixed(1), '@', minYAt)
+console.log('maxE =', maxEnergy.toFixed(0), '@', maxEnergyAt, '(E0=' + startEnergy.toFixed(0) + ')')