cl1694's World and a new tutorial idea

1) We have a new puzzle author and bug-finder-and-reporter, cl1694! They've already helped buff a post-game puzzle and opened a new world with new puzzles and buffs of other community puzzles. Check it out for a challenge! (I also got some great bug reports from Bleatnik.)

2) I'm trying yet another new idea for Chapter 0 to try to teach the concept of 'a robot going down and rewinding back up after doing something useful'. Meet Light? is out and Interference is in. It does use a one-off tile but I hope what the tile does and why I need it is self-evident enough. It'd be nice to scatter this new tile around the campaign some more but I haven't even begun to think about this yet. Anyway, let me know if this works or if it's completely off the mark, but I really want to get this game to work properly for all skill levels.

Changelogs follow:

**v19.2 (9th June 2025):**

* Chapter 0: Cut Meet Light?. Replace with Interference and its (Insight).

* Chapter D: Replace Springlock System (moved to Formless Exploration) with Kinetic Hotwire.

* Chapter -1: ||Buff Pachinko (Loop 2) [VAR1]. Add cl1694 to credits guest levels.||

* Chapter M (WIP): Move Phantom Push and [VAR1] here.

* The Cutting Room Floor: Add Lightning Round, Lightning Snake.

* Green's World: Add Stuck [VAR1], Orbital Drop [VAR3]. Buff Broken Bridge [VAR2].

* cl1694's World: Open a new chapter in Community Levels. Add Woodchunk and its (Insight), Woodchunk [VAR1], Joke Moving Service, Tile Selector [Low Power], Window of Opportunity [VAR1], Fire In The Sky [REV1] [VAR1], The Eclipse Pit [VAR1].

* Custom elements: Add No Move.

* Level editor: 'New Level' is now called 'Clear Level'.

* Add a 'Discord' button to the Intro and Outro. Fix button focus issues in the Outro.

* Replays that win by ||merging Chrono Helixes|| finally for realsies this time save properly.

* Space Program/Far Lands/Void Diver achievements now only trigger if a robot is sent in that direction.

* The menu button for Your Replay now changes to Save Replay when shift is held/Unwin when ctrl is held.

* Replay Turn- and Replay Turn+ now work even if Replay Mode is off (turning Replay Mode on first). As a side-effect, while using a controller, Previous Level and Next Level now don't work while Replay Mode is on (to allow LT/RT to act as Replay Turn- and Replay Turn+ in more circumstances).

* Bug Gallery: Improved crash handling in Negativity/Cut and Paste.

* Publish Chapter E Steam Achievements and a hint for Exception Handler Steam Achievement.

* Fix a Continuum/undo bug.

* Fix a visual bug where Cuckoo Clocks did not chime.

* Fix a visual bug when scrubbing through a Voidlike replay where Cuckoo Clocks have chimed.

* Fix a visual bug when rewinding a Voidlike replay through an actor changing Colour (or similar brittle animations).

**v19.3b (28th June 2025):**

* Chapter 0: New Interference (Insight).

* Chapter B: New idea for Zombie Mode.

* The Cutting Room Floor: Add Cold Roommates, Beware of Pit and (Remix), Acrobatics?, Acrobatics? [VAR1], Acrobatics??. Cut Doormaster (forgot to do this when I published Chapter E). Split (Unused Puzzles) into (Custom Elements).

* Green's World: Add Delay Circuit [VAR1]. Buff Lockdown.

* cl1694's World: Buff The Eclipse Pit [VAR1] (oops). Add Woodchunk (Insight) (oops). Add Kinetic Hotwire [VAR1].

* Bug Gallery: Stricter crash handling in Negativity (all crashes on older versions now trigger Exception Handler, and Exception Handler should not be triggered for anything that was never a crash).

* Fix a bug where broken Light couldn't move from a Phaseboard Heavy/Zombie Tile. v19.3b: Actually fix it.

* Custom Elements: Add Blue Glass Block, Blue Floorboards, Blue Repair Station, One Move, One Move Green, Anchor Point. (Known bug: One Move + Bomb, the Bomb doesn't properly destroy itself.)

**v19.4 (29th June 2025):**

* Chapter R (WIP): Open in Community Levels. Add Anchor Moving Service, Dig, Mechanical Arm, Hazardous Materials.

* Fix a crash when using an Anchor Point to move onto your current tile.

* Fix ghosts being incorrect for mid-move Anchor Point/Blue Glass Block/etc.

* Level editor: Improve the text for Repair Stations and No Moves.

* Custom elements: Add Terrain Lock.