WORK-005: work view — wt rows fade with age, black to grey by the day

Now: DONE

Input

Context

Follow-up to the WORK-004 button row (gritzko, chat 2026-07-19). Work-view wt rows currently render their text in the default fg regardless of age; nothing signals which trees are stale. Evidence, be tip (///be):

views/work/work.js:396 renders the row's ts via render.dateCol(d.ts||0n) (repo rows :425 alike); d.ts is the wt's tip commit ts (ron60).
Age idiom exists: view/render.js:41 relAge(ts, now) compares ron60 ts vs ron60 now via ronToMs.
"now" is be.now — the run's start ts, refreshed per verb invocation (core/loop.js:461, POST-029 ruling); never scavenge time elsewhere.
The tok tag palette (view/bro.js THEME) is FULL — WORK-004 took the last free tag 'A'; nine grey shades can NOT be nine tags.
UNLANDED overlap: work/WORK-004 (///be#896ed3d8) rewrites the same row-render region (ahbehSpans/wtSpans) and test/work/view/check.js; work/WORK-003 also touches work.js.

Goals

RULING (gritzko, chat 2026-07-19): each wt line's fg reflects the ENTRY's freshness.

Age < 24h: black #000; then ONE grey shade per each further 24h: #111, #222, ...; top off at #888 for age over a week.
Shade = #111 * min(floor(age/24h), 8) — 9 levels, days 0..7 then the 8+ cap.
Age = be.now minus the row's ts (d.ts, the wt tip commit ts).
The fade paints the row's TEXT (key, leader, time, hashlet, subject); buttons/O-invites keep their own colors.

Constraints

Tag space is full — the shade needs a per-row fg mechanism (e.g. direct SGR in the theme idiom), not new tok tags; keep the plain (btns=false) path sane.
Overlaps UNLANDED work/WORK-004 and work/WORK-003 in views/work/work.js + test/work/view/; build on be tip, reference those wts read-only, expect a weave.
Amending test/work/view/check.js to pin the fade is AUTHORIZED; no other test edits.
Rulings in force: be.now is the truth for "now" (no log read-back); pty verification through the real UI path; errors in plain words.

WIP

Design decisions

Mechanism = the WHY-001 idiom, fg twin: the work hunk already carries O tokens (button spells) so the pager paints it via view/bro.js paintWhyRow. Each pager wt row now leads with a hidden bare #rrggbb O marker; a new rowFgAt reads it and tints ONLY THEME-default cells (fm/fg==0), so buttons/ ahbeh/invites keep their colours. No new tok tag (space full).
fadeHex(d.ts) in work.js: level = min(floor((be.now-ts)/24h), 8), channel = level*0x11; emitted only when btns (pager), so the plain path stays sane.
render.js exports ronToMs (the age idiom) for the day delta.
Fixtures pin ages by seed COMMIT ts (SOURCE_DATE_EPOCH), never mock now; the plain date-normalizer gained the this-week Dow15 form (ext two ~3.5d).

TODOs

red: new check.js fade asserts fail on tip (got null) before the fix
the day-shade function: ron60 ts + be.now → grey level 0..8 (fadeHex)
paint wt-row text with the shade; buttons/invites untouched (paintWhyRow)
green: check.js pins fresh #000000, 3-day #333333, 8+day #888888; a real-pager (pager.paintRow) + end-to-end work --color fade assertion

Blockers and bummers

Pre-existing reds at tip UNRELATED to this change (verified with lib reverted): test/bro/color, test/bro/view (golden mismatch, fixture readdir order).
Overlaps UNLANDED work/WORK-004 (same wtSpans/check.js region) — a weave is expected; built on be tip f168d856 without it.

Outcome

Local commit 2e02815a (///be) + 2d4617ff (//WORK-005/test sub); NOT landed/merged. Files: view/bro.js, view/render.js, views/work/work.js, test/work/view/{check.js, run.sh}.