[raiseCatError]

Stacked on #417 (modules) → #416 → #415 → #414 → #413 → #412 → #411. Merge in order.

What

Twelve bundled variants in five new families, all from MIT-licensed upstream sources pinned to a commit. Values were extracted from the raw files, not from memory or summaries. Sources, revisions, licenses (copyright lines read from each LICENSE) and the role mapping are in docs/design/theme-families.md.

Family	Variants	Source (revision)
Ayu	Dark, Mirage (default), Light	ayu-theme/ayu-colors themes/*.yaml (d461f029): base palette, editor/UI fg, panel bg, accent tint, error
Kanagawa	Wave (default), Dragon, Lotus	rebelot/kanagawa.nvim colors.lua + themes.lua (bb85e4bf): each theme's own fun/keyword/string/type/identifier/bg_p2/nontext/comment/bg_visual/ok/error
Everforest	Dark, Light (medium)	sainnhe/everforest palette.md (85a86eb6)
Flexoki	Dark, Light	kepano/flexoki README (8d723bac): 400 accents and base tiers for dark, 600 for light, as documented
Night Owl	Night Owl, Light Owl	sdras/night-owl-vscode-theme theme JSON (cc291eba)

• These themes recolor NMSh's own prompt fills and chrome only. The host terminal's colors and configuration are never touched.
• Every role fill passes the existing 4.5:1 module-text contrast test.
• Light variants keep NMSh's text tiers, as the existing light families do.
• Existing ids, stored preferences and the Lavender default are unchanged. Family defaults: Ayu Mirage, Kanagawa Wave, Everforest Dark, Flexoki Dark, Night Owl.
• Theme Studio: the Built-in list grew to 43 entries, so it gains / to filter by name, family or dark/light (each word must match). Enter keeps the filter, and Esc clears it before Esc closes. Text typed into the filter never triggers the Chroma toggle.

Deferred, with reasons

• Oxocarbon: its grays are computed at runtime in HSLuv by the theme's own code. Reproducing them would mean running that code or re-implementing it, and approximations are out.
• GitHub Primer: its values come from a built @primer/primitives release, not from the theme repository.
• Material/Palenight and classic Monokai: licensing and canonical source not verified.
• Tier 2 families.

#336

The editor's dialogs (#414) already use the existing action-control renderer. No other v0.21 surface needed a new control, so nothing else was consolidated (noted in the ledger).

Tests

• themeFamilies.test.ts: the new family ids and variant names; spot checks against the upstream files; the filter's behavior. The existing per-variant tests (valid hex, 4.5:1 contrast on every fill, distinct adjacent fills, light variants keep text tiers) cover all twelve.
• 114 theme- and palette-related test files pass.

Not verified

Physical checks: docs/testing/v021-physical-qa.md section 7 (dark and light terminals, 256-color, NO_COLOR, host untouched). Not run.

Refs #401, #336, #410