Furniture/Terrain pages missing required tools for "advanced object deconstruction"

[ushkinaz]

Summary

Furniture and terrain pages show the items obtained by deconstruction but omit the required tools when the deconstruction requires "advanced" techniques (e.g., dismantling a fireplace, capacitor bank, or broken console).

reported at https://discord.com/channels/830879262763909202/830916329053487124/1478949066187477015

Context

• src/types/Furniture.svelte – Deconstruct section
• src/types/Terrain.svelte – Deconstruct section
• src/types.ts – Construction type

Impact

Users cannot find what tools they need to perform advanced deconstruction on specific furniture/terrain (e.g. fireplace, electrical conduit, capacitor). The guide shows the loot but not the tools. This was reported by a player via Discord.

Steps to reproduce

1. Navigate to the Fireplace (f_fireplace) page in the guide.
2. Observe the "Deconstruct" section – it lists items dropped, but no tools required.
3. In-game, deconstructing a fireplace requires HAMMER 2, CHISEL 2, PRY 3, SCREW 1.

Tech details

Root cause – two related gaps:

1. Constructions that deconstruct an item are not surfaced on Furniture/Terrain pages.

Both Furniture.svelte and Terrain.svelte compute a constructions list by filtering for constructions whose post_terrain matches the page's item id (i.e., constructions that build it). They never query for constructions whose pre_terrain or pre_furniture matches the id (i.e., constructions that deconstruct it).

The fix is to add a derived reactive variable in both components:

let deconstructingConstructions = $derived.by(() =>
  data.byType("construction").filter(
    (c) => c.pre_terrain === item.id || c.pre_furniture === item.id
  )
);

Then render these under a new "Deconstruct via" section using the existing <Construction> component, which already handles tool rendering via <RequirementDataTools>.

2. pre_furniture is missing from the Construction type.

The JSON data uses a pre_furniture field on construction objects (distinct from pre_terrain), but the Construction type in src/types.ts only declares pre_terrain. Add:

pre_furniture?: string; // furniture_id

Relevant data structures:

• Advanced deconstruct constructions use group: "advanced_object_deconstruction" and using: [["object_deconstruction_advanced", 1]].
• object_deconstruction_advanced is a requirement that resolves to: HAMMER 2, CHISEL 2, PRY 3, SCREW 1.
• Regular deconstruction (constr_deconstruct, with deny_flags: ["ADV_DECONSTRUCT"]) and easy deconstruction (constr_deconstruct_simple, requiring flag EASY_DECONSTRUCT) are separate constructions that also fire pre_special: "check_deconstruct". Their tools are also not currently shown on Furniture/Terrain pages; this fix would surface them as well.

Examples

• f_fireplace → deconstructed by constr_remove_object_fireplace
• f_electrical_conduit → deconstructed by constr_remove_electrical_conduit
• f_capacitor → deconstructed by constr_remove_capacitor_bank
• t_console → deconstructed by constr_remove_t_console
• t_console_broken → deconstructed by constr_remove_t_console_broken

(All from nightly build, _test/all.json)

Acceptance criteria

• The Fireplace (f_fireplace) detail page shows a section listing the tools required to deconstruct it (HAMMER 2, CHISEL 2, PRY 3, SCREW 1) alongside the existing drop list.
• The same is true for other furniture/terrain with advanced deconstruction constructions.
• No regression for pages where no such deconstruction construction exists.