Rename screw tubes to screw conveyors (t44)

Player text says Screw conveyor; code uses screw (BP_SCREW, piece id
screw, screwIntake...). No compatibility code for old saves or
blueprints. Suite outputs match before and after apart from names.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/ui/notebook.js

@@ -60,7 +60,7 @@ function controlsHtml() {
     ['Fly', 'W A S D'], ['Boost while flying', 'Shift'], ['Tool modifier (while not flying)', 'Shift'], ['Use tool', 'Left mouse'], ['Second action', 'Right mouse'],
     ['Tools', '1 – 4'], ['Select one to blow · piece', 'Q / E'], ['Switch build tab', 'Shift + Q / E'], ['Variant: material · direction · flip', 'R'], ['Wall: cycle shape · flip diagonal drag', 'T'], ['Wall or mold material menu (Build)', 'F'],
     ['Pick up selection or what you click (Pneumatic nozzle)', 'Left drag · Shift: everything'], ['Select (Pneumatic nozzle)', 'Click a bag name · Q/E'], ['Add to selection (Pneumatic nozzle)', 'Ctrl+click a bag name'], ['Show everything found (Pneumatic nozzle)', 'Hold Ctrl in the bag'], ['Clear selection (Pneumatic nozzle)', 'Clear in the bag'], ['Blow everything loose in the bag', 'Shift + right click'], ['Nozzle or brush size', '[ ]  or  Shift + wheel'],
-    ['Replace what is built (Build)', 'Hold G'], ['Copy a box of what you built', 'Hold C, drag'], ['Cut a box (refunded, paste it back)', 'Hold X, drag'], ['Paste again', 'V'], ['Undo building', 'Ctrl + Z'], ['Blueprint library', 'B'], ['Zoom', 'Mouse wheel'], ['Interact (gates, molds, fans, filters)', 'F'], ['Thermal lens', 'H'], ['Info overlay: filters, belt and tube directions', 'I'], ['Bot lamp', 'L'],
+    ['Replace what is built (Build)', 'Hold G'], ['Copy a box of what you built', 'Hold C, drag'], ['Cut a box (refunded, paste it back)', 'Hold X, drag'], ['Paste again', 'V'], ['Undo building', 'Ctrl + Z'], ['Blueprint library', 'B'], ['Zoom', 'Mouse wheel'], ['Interact (gates, molds, fans, filters)', 'F'], ['Thermal lens', 'H'], ['Info overlay: filters, belt and screw conveyor directions', 'I'], ['Bot lamp', 'L'],
     ['Pick the piece under the cursor (with its direction and settings)', 'Middle mouse'], ['Notebook', 'N'], ['Clear all blueprint ghosts', 'Delete'], ['Save', 'Ctrl + S'], ['Pause · menu', 'Esc'], ['Mute', 'Shift + M'], ['Full map', 'M'], ['Minimap zoom', '+ / − on minimap'],
   ];
   const pad = [
@@ -71,7 +71,7 @@ function controlsHtml() {
   const tools = [
     ['1 Resonance drill', 'Hold left click to send pulses from the bot toward the cursor: rock they shake hard enough shatters and falls as rubble, ore, coal or scrap, and trees come apart into wood chunks and acorns. Q and E set the pulse width: narrow bores a tunnel fast, wide clears a big cone slowly, medium is in between. R over a material tunes the drill to it, so only that shatters (great for pulling a vein out of the rock); R again untunes. Built blocks are never harmed. Better bits dig harder rock, faster and further.'],
     ['2 Pneumatic nozzle', "Left drag picks up the selection, or what you click if nothing is selected. Right click blows the selection. Click a bag name or Q/E selects one; Ctrl+click mixes. Hold Ctrl to see everything found. Clear removes the selection. Bars blow alone. Blowing out the last of a material deselects it. Shift while not flying takes everything; Shift + right click blows everything loose in the bag."],
-    ['3 Build', 'Places pieces on a grid of 4×4 blocks: wall blocks, belts, tubes, filters, grates, gates, pipes, pumps, outlets, Grinders, Saws, Brick presses and Bar racks, machines (fans and silos) and molds. Drag for a line, hold Shift while dragging for a filled rectangle. A diagonal wall drag makes a sealed sloped face, solid below; T flips it. For one wall block, T cycles square and four slope corners. Diagonal belt and filter drags make sloped runs that carry up or down, following the drag. Their faces always point up. Right click takes a piece back. Your bot flies through anything you build.'],
+    ['3 Build', 'Places pieces on a grid of 4×4 blocks: wall blocks, belts, screw conveyors, filters, grates, gates, pipes, pumps, outlets, Grinders, Saws, Brick presses and Bar racks, machines (fans and silos) and molds. Drag for a line, hold Shift while dragging for a filled rectangle. A diagonal wall drag makes a sealed sloped face, solid below; T flips it. For one wall block, T cycles square and four slope corners. Diagonal belt and filter drags make sloped runs that carry up or down, following the drag. Their faces always point up. Right click takes a piece back. Your bot flies through anything you build.'],
     ['4 Igniter', 'Heats a small spot to 640°C, and its flame reaches a few grains into a pile. Enough to light coal and wood that touch air.'],
     ['Copy, cut and paste', 'Hold C (copy) or X (cut) and drag a box over what you built; let go and it is picked up, ready to paste. Cut takes it down and refunds it to your bag. Click to place ghosts: your bot builds them from your bag when it is close. R flips, V pastes again, right click or Esc stops. Ctrl+Z undoes building. The notebook (B) keeps saved blueprints and a few starter designs.'],
   ];
@@ -84,8 +84,8 @@ function controlsHtml() {
   3. Build (3) a chamber of stone wall blocks with a one-block vent in the roof, a floor of clay Grates, and an Ingot mold right under the grates. The notebook's Blueprints tab has this as a starter design.<br>
   4. Ctrl+click coal and copper ore in the bag to blow a mix. Fly inside (the bot passes through what you build) and right click to blow an even mix onto the grates: about 50 of each. (Ore first and coal on top works too; coal buried under ore will not light.) Light a coal grain on top with the Igniter.<br>
   5. When the ingot sets, bars drop out of the bottom of the mold onto whatever is under it. Leave one open block under it: a belt below that carries them off, or pick them up with the nozzle. Leftover metal stays for the next firing. Ingot molds empty themselves: bars, junk and scrap drop below, slag is thrown away and the grate above is raked. Removing any mold returns its set metal to your bag: whole bars as bars, the rest as scrap.<br>
-  Screw tubes carry grains and whole bars: feed bars in from a belt, turn corners and unload at the mouth. Drag at about 45° for a diagonal run; R cycles eight directions.<br>
-  6. Blow the bars into the trade dock: they sell the moment they drop through its grate, and bars pay far more than ore. Watch the Market page for orders that pay double. Money buys belts, screw tubes and fans; pay down the claim there too.<br>
+  Screw conveyors carry grains and whole bars: feed bars in from a belt, turn corners and unload at the mouth. Drag at about 45° for a diagonal run; R cycles eight directions.<br>
+  6. Blow the bars into the trade dock: they sell the moment they drop through its grate, and bars pay far more than ore. Watch the Market page for orders that pay double. Money buys belts, screw conveyors and fans; pay down the claim there too.<br>
   7. From there: deeper ores (tin, zinc, silver, gold), alloys, fans for hotter fires, iron and steel.</p>
 `;
 }