Aux-lane suppression + PA geometry fixes; probe/verify tooling

MapBuilder.luau
  - Suppress the aux lane across samples 525-550 (AUX_SUPPRESS_FROM/TO),
    honoring the user's hand deletion in Studio so a rebuild no longer
    regenerates it.
  - Smoothstep the width ramp over AUX_BLEND=5 samples on each side. A hard
    cut produced a 26-stud lateral fence jog; the blend removes it.
  - DO NOT remove this suppression. Re-enabling it resurrects geometry the
    user deleted by hand.

rokit.toml
  - rojo 7.5.1 -> 7.7.0 to match the auto-updating Studio plugin.
    Server older than plugin fails the handshake with
    "attempt to index number with 'protocolVersion'".

tools/
  - 34 read-only probe/verify/capture scripts used to measure the datamodel
    instead of reasoning from source.

Verified-good baseline at this commit:
  total parts       16788
  PAWestSlip        60 segs, 34.4 deg total bend, worst 1.4, 0 kinks >5
  PAEastSlip        60 segs, 30.7 deg total bend, worst 1.3, 0 kinks >5
  AuxLane parts     30 (samples 525-550 deliberately absent)
  barrier coverage  823 samples, 0 unguarded
  fence jogs >10st  0

tools/probe_pa_inventory.luau

@@ -0,0 +1,103 @@
+-- READ-ONLY inventory of the Daikoku Futo PA area so the capture camera can be
+-- anchored to real geometry instead of guessed coordinates.
+--
+-- Wanted:
+--   * what top-level containers/models exist for the PA
+--   * every distinct part-name PREFIX in the PA region, with counts
+--   * the PA's world-space bounding box + centre (for framing)
+--   * key landmarks: slip ramps, apron/parking deck, any building/structure
+local out = {}
+local function say(s) table.insert(out, s) end
+
+local map = workspace:FindFirstChild("Map")
+if not map then return "Map MISSING" end
+
+-- 1. Top-level structure of Map
+say("=== Map children ===")
+for _, c in ipairs(map:GetChildren()) do
+	local n = 0
+	for _, d in ipairs(c:GetDescendants()) do
+		if d:IsA("BasePart") then n += 1 end
+	end
+	say(("  %s (%s) parts=%d"):format(c.Name, c.ClassName, n))
+end
+
+-- 2. Anything whose name mentions PA / Daikoku / parking
+say("=== named PA-ish objects (models/folders) ===")
+local seen = 0
+for _, d in ipairs(map:GetDescendants()) do
+	if not d:IsA("BasePart") then
+		local nm = d.Name
+		if nm:match("PA") or nm:lower():match("daikoku") or nm:lower():match("park")
+			or nm:lower():match("apron") or nm:lower():match("rest") then
+			local n = 0
+			for _, x in ipairs(d:GetDescendants()) do
+				if x:IsA("BasePart") then n += 1 end
+			end
+			say(("  %s (%s) parts=%d  parent=%s"):format(d.Name, d.ClassName, n, d.Parent.Name))
+			seen += 1
+			if seen > 40 then say("  ...(truncated)") break end
+		end
+	end
+end
+if seen == 0 then say("  (none found by name)") end
+
+-- 3. Locate the PA by its slip ramps: the apron is where the ramps land.
+local land = {}
+for _, s in ipairs({ "PAWestSlip", "PAEastSlip" }) do
+	local best, bestK = nil, -1
+	for _, d in ipairs(map:GetDescendants()) do
+		if d:IsA("BasePart") then
+			local k = d.Name:match("^" .. s .. "_Deck_(%d+)$")
+			if k and tonumber(k) > bestK then bestK = tonumber(k); best = d end
+		end
+	end
+	if best then
+		land[s] = best.Position
+		say(("%s landing: (%.0f, %.0f, %.0f)"):format(s, best.Position.X, best.Position.Y, best.Position.Z))
+	end
+end
+
+local anchor
+if land.PAWestSlip and land.PAEastSlip then
+	anchor = (land.PAWestSlip + land.PAEastSlip) / 2
+elseif land.PAWestSlip then
+	anchor = land.PAWestSlip
+elseif land.PAEastSlip then
+	anchor = land.PAEastSlip
+end
+if not anchor then return table.concat(out, "\n") .. "\nNO SLIP LANDINGS -> cannot anchor" end
+say(("PA anchor (between landings): (%.0f, %.0f, %.0f)"):format(anchor.X, anchor.Y, anchor.Z))
+
+-- 4. Every part within 1400 studs of the anchor, grouped by name prefix.
+local function flat(v) return Vector3.new(v.X, 0, v.Z) end
+local counts, mins, maxs = {}, {}, {}
+local lo = Vector3.new(math.huge, math.huge, math.huge)
+local hi = Vector3.new(-math.huge, -math.huge, -math.huge)
+local total = 0
+for _, d in ipairs(map:GetDescendants()) do
+	if d:IsA("BasePart") then
+		if (flat(d.Position) - flat(anchor)).Magnitude < 1400 then
+			total += 1
+			-- prefix = name with trailing _<digits> stripped
+			local pre = d.Name:gsub("_%d+$", "")
+			counts[pre] = (counts[pre] or 0) + 1
+			lo = Vector3.new(math.min(lo.X, d.Position.X), math.min(lo.Y, d.Position.Y), math.min(lo.Z, d.Position.Z))
+			hi = Vector3.new(math.max(hi.X, d.Position.X), math.max(hi.Y, d.Position.Y), math.max(hi.Z, d.Position.Z))
+		end
+	end
+end
+say(("=== %d parts within 1400 studs of PA anchor ==="):format(total))
+local keys = {}
+for k in pairs(counts) do table.insert(keys, k) end
+table.sort(keys, function(a, b) return counts[a] > counts[b] end)
+for idx, k in ipairs(keys) do
+	if idx > 30 then say(("  ...and %d more prefixes"):format(#keys - 30)) break end
+	say(("  %-28s %d"):format(k, counts[k]))
+end
+say(("bbox: (%.0f,%.0f,%.0f) .. (%.0f,%.0f,%.0f)"):format(lo.X, lo.Y, lo.Z, hi.X, hi.Y, hi.Z))
+say(("bbox size: %.0f x %.0f x %.0f"):format(hi.X - lo.X, hi.Y - lo.Y, hi.Z - lo.Z))
+local ctr = (lo + hi) / 2
+say(("bbox centre: (%.0f, %.0f, %.0f)"):format(ctr.X, ctr.Y, ctr.Z))
+
+return table.concat(out, "\n")