icon: the agentic styles re-render brand marks in the material

[ralyodio]

Anthony, on https://logicsrc.com/openicon?style=agentic-emissive&kind=brand : "why doesn't brands change?" … "stylinze brands too please".

They did not change because they could not. A colour style stopped at the drawn icons: a brand's coloured form was the same line mark recoloured to the owner's hex, written into each style directory. All 111 brand files were byte-identical across hq, agentic-matte, agentic-machined and agentic-emissive — github.webp was the same 606-byte file in all four.

What changes

The three agentic styles now draw the marks too, pinned to the owner's own mark as the only reference: same geometry, same colour, new surface.

hq deliberately does not. A style restyles marks only if it defines promptForBrand; hq leaves it undefined and its brands stay the flat owner-coloured logo a first-release reader already has. That one optional method is the whole switch.

What the pilots taught

Six marks (github, gitlab, npm, docker, figma, slack), redrawn after each change:

1. The drawn-icon frame ends "never resemble a logo" — backwards when the mark IS the subject. BRAND_FRAME replaces it with a tighter guard: reproduce this geometry, invert nothing, add nothing, no container it does not already have.
2. Name the hex inside the material paragraph. "Its own colour" is not enough. Six of six pilot marks came back graphite until the hex moved into the material sentence — and the first time, the hex was not reaching the prompt at all, because brandColors was never wired through the CLI. The prompt said "the mark is monochrome" and the model obeyed.
3. Say the mark is SOLID. Emissive drew neon outlines of shapes that should be filled, and npm came back with its counter inverted.
4. Emissive cannot carry a dark mark. 26 of the 111 are too dark to emit; told to "glow in its own colour", GitHub came back glowing blue. emissionFor() splits them three ways: the colour itself (85), a lightened tint of the same hue for the 4 that are dark but still hued (Slack, PayPal, Tumblr, XMPP), and neutral white for the 22 that are black with no hue to raise (GitHub, Apple, OpenAI…).

Manifest

A drawn mark derives like any other master and carries made_by: "both" — the geometry is the owner's, the surface is ours — keeping hex and hex_source. It writes no svg: a reader that found one there would show the flat mark and never the material. StyleFiles.made_by gains "both", which rule 8's vocabulary already allowed.

Trademark note

This applies a material treatment to marks we do not own. Geometry, proportion and colour are held fixed and the owner's hex/hex_source stay recorded, which is the most defensible form of it, but it is a change of posture from "a set does not redraw them" and some owners' brand guidelines forbid altering the mark. Flagged before building; Anthony asked for it twice.

Verified

• npm run typecheck: clean
• npx vitest run test/icon.test.ts test/icon-hq.test.ts: 33 passed
• Pilot draws: 36 calls over four rounds, 0 refusals, 0 failures
• Dry run against the real set: exactly 111 per style, the 259 UI masters correctly skipped

🤖 Generated with Claude Code

[github-actions]

ThreatCrush Security Scan

23 finding(s)

HIGH/CRITICAL: 4 | MEDIUM: 10 | LOW: 9

Severity	Rule	Location
HIGH	sh-remote-script-execution	root-ubuntu.sh:3227
HIGH	sh-remote-script-execution	root-ubuntu.sh:3228
HIGH	sh-remote-script-execution	root-ubuntu.sh:4840
HIGH	sh-remote-script-execution	root-ubuntu.sh:4844
MEDIUM	sh-remote-script-execution	root-ubuntu.sh:4993
MEDIUM	redos-nested-quantifier	src/domain-free.ts:56
MEDIUM	redos-nested-quantifier	src/emoji.ts:167
MEDIUM	redos-nested-quantifier	src/icon.ts:159
MEDIUM	redos-nested-quantifier	src/mail.ts:1042
MEDIUM	sql-template-interpolation	src/users-dump.ts:487
MEDIUM	sql-string-concatenation	src/users-dump.ts:507
MEDIUM	sql-template-interpolation	src/users-dump.ts:540
MEDIUM	sql-string-concatenation	src/users-dump.ts:574
MEDIUM	redos-nested-quantifier	src/wcag.ts:556
LOW	secret-generic-credential	src/credentials.ts:36
LOW	secret-generic-credential	src/user-export.ts:632
LOW	secret-generic-credential	src/user-export.ts:638
LOW	secret-generic-api-key	test/credentials.test.ts:208
LOW	secret-generic-credential	test/mail.test.ts:141
LOW	secret-generic-credential	test/shorten.test.ts:36
LOW	secret-database-url	test/users-dump.test.ts:108
LOW	secret-database-url	test/users-dump.test.ts:119
LOW	secret-database-url	test/users-dump.test.ts:120

Snippets are redacted; ThreatCrush never prints matched credential material.