[Xehanort88]

Problem

VisuStella Skills and States Core lets a project define skill cost types (HP, Gold, Potion, and any it adds) in its Skill Cost Types parameter. Only MP and TP have fields in Database › Skills; every other cost is typed into the Note by hand as <Gold Cost: 100>, skill by skill.

What this adds

A Skill Costs card on Database › Skills, after Invocation, in the manner of the Passive States card: it appears only when the project's js/reactor_plugins.js enables VisuMZ_1_SkillsStatesCore and that entry defines a cost type the card can read. Without the plugin there is no card and the page is unchanged.

• One row per cost type: amount, a value / % choice where the type reads both, Maximum and Minimum.
• MP and TP as a value are the Invocation fields themselves; as a percent they are the tag. A flat <MP Cost: n> in the Note is flagged, because the plugin copies it over the field when the database loads.
• Item, weapon and armor costs are a list with Add and Delete, picked by record name (the plugin finds the record by name). A name no record has is flagged.
• Nothing is stored but the notetag the plugin already reads, changed where it stands in the Note, with the Note's own line ends.

How the tags are found: each cost type's CalcJS is scanned for regex literals that start with <, they are compiled, and every tag the card could write is tried against them. A form is offered only when the type's own pattern reads the card's tag back with the number it was given, so the card never writes a tag the plugin would not read. A type whose patterns fit none of the known shapes is listed with a count of its tags and no fields.

Where

• new editor/src/database/SkillCostsSection.js (RRSkillCosts): a pure half (classify, read, write) and createSection
• editor/src/database/DatabaseSkillEditor.js: mounts the card after Invocation
• editor/index.html: script tag
• editor/src/I18nReviewedTranslations.js: 8 new phrases in all 17 locales
• editor/CHANGELOG.md
• new editor/tests/skill-costs-section.test.cjs: 14 tests

No runtime change.

Verification

• tests/skill-costs-section.test.cjs: 14 pass. They load the real module and draw the real card against card-dom: discovery, classification, in-place edits with LF and CRLF notes, unit change, MP as field and as tag, item costs, and that showing the card or setting a field to the value it already shows writes nothing.
• Full suite: the set of failing test names is the same before and after the change (compared by name, on a Windows checkout whose existing failures are environmental).
• Driven in the running editor over CDP (SDK NW.js) at 1280x800, 2560x1392 and a 700px detail pane: opening skills and moving between them leaves getDirtyKeys() empty; edits land in the Note; typing in the Note updates the card; with the plugin disabled the card is absent.

Limits

• The translations are a machine-assisted first pass and are marked so in the catalog.
• The item picker is a plain select of record names; it has no search.
• Per-item Max / Min tags, <JS … Cost> blocks and the battler-side cost tags (on actors, classes, equipment, states) are not edited. A JS block is flagged as present.
• A cost type written in a shape the probes do not recognise gets a read-only row, not fields.
• A change made from the card drops the Note textarea's own undo history, as the Passive States and Tactics cards do. Not measured, inferred from how the field is set.

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