Replaces the demolition scaffold with the structural grid that Tasks 8-21
fill in. Root is a 4-row grid (topstrip / alertbanner / main / bottomticker)
with named grid-areas; the main row contains a 3-col sub-grid (left aside /
center section / right aside) at fixed 320px / 1fr / 320px. 100dvh, no body
scroll, ethos custom properties only — no template SCSS variables touched.
Adds --col-panel-width: 320px to the ethos token block (no magic number in
the layout module). index.tsx becomes a one-line re-export of Dashboard so
the lazy-route contract in routers.tsx stays unchanged.
No placeholder components. The empty <aside>/<section> elements are the
column containers themselves; subsequent tasks add real children inside
them rather than swap stub components.
Verified in browser at 1920x1080: rgb(10,10,10) bg, 320/1247/320 col rects,
1px var(--fg-4) rules between columns, body has no scroll. All 5 Plan 5
Task 7 Design QA boxes checked.
Two related issues caught in live verification:
1. Coinbase's sequence_num is connection-global (not per-product). Previous
per-product tracking flagged every cross-product frame as a gap.
2. Even after switching to global tracking, gaps still occur regularly under
normal operation (Coinbase's exact sequencing pattern across channels is
not strictly seq+1 frame-to-frame). Treating gaps as fatal kills the
ReadLoop in seconds, never giving the minute aggregator a chance to cross
a boundary, so btc_eth_minute stays empty.
Resolution: rewrite Sequencer for a single global counter and downgrade
gap-detection to a non-fatal Warn. ReadLoop continues; (symbol, ts) PK on
btc_eth_ticks is the safety net for any duplicate replay. Includes a
diagnostic log on loop exit (handleConn) for ops visibility.
Coinbase Advanced Trade WS leaks Go's time.Time.String() format in
heartbeat events (e.g. "2026-05-02 07:55:50.784... +0000 UTC m=+102632...")
which is not RFC 3339 — UnmarshalJSON into time.Time fails and the entire
envelope errors. Decode current_time as a string and parse it with a
fallback that handles both RFC 3339 and the Go-string variant (with the
m=+monotonic suffix stripped).
Adds shopspring/decimal as a require (folded with the first consuming task per
Plan 2 convention). cenkalti/backoff/v4 is also now consumed transitively;
remains indirect until Task 5 (reconnect) imports it.
Hand-crafted fixture matches spec §8.5 schema. Live API endpoint may move; client
takes BaseURL config for swap-in once api.ransomware.live publishes a stable JSON
endpoint (current free tier returns HTML landing page on /recentvictims).
CarterPerez-dev