# perf\(web\): mount charts directly through the DOM host · flambo/atlantis

[View on GitCafe](https://git.cafe/flambo/atlantis/commit/2bc80bb9fd44420995eee6b4e40ca4a6cd0871c3)

Repository: [flambo/atlantis](https://git.cafe/flambo/atlantis)

Visibility: public

Requested revision: 2bc80bb9fd44420995eee6b4e40ca4a6cd0871c3

Requested commit: 2bc80bb9fd44420995eee6b4e40ca4a6cd0871c3

Commit: 2bc80bb9fd44420995eee6b4e40ca4a6cd0871c3

Tree: 695f9906b2449d8ee4cdc264df5400253a9ca306

Author: flamboh

Committer: flamboh

## Message

```
perf(web): mount charts directly through the DOM host

Mount through TanStack DOM in a Svelte attachment. Remove client prerender and a separate reactive resize pass. Keep responsive definitions, focus options, teardown and the positioned-observation contract. An owned interaction snapshot prevents lazy callback-only derived chains from retaining detached charts; repeated-filter GC stress verifies teardown.

Fixed-settings checkpoint versus QA-fixed layer 3: all charts 4280.4 -> 3163.2 ms, retained dashboard heap 30.1 -> 22.9 MiB; file readiness 654.3 -> 487.1 ms. The mount bundle inventory reused a directory and is invalid; later fresh exports and the final build validate bundle savings. Three browser samples per page.

Checkpoint measurements above predate the final QA lifecycle/coverage fixes and are not isolated shipping effects. Combined shipping benchmark: 477.2/2934.3 ms default visible/all charts, 114 ms observed initial TBT, 18.2 MiB retained heap and 191.1 KiB gzip JS. Original baseline: 509.1/3258.9 ms, 130 ms, 18.3 MiB, 228.1 KiB. Layer 3: 569.3/4271.3 ms, 159 ms, 29.9 MiB, 202.4 KiB. Baseline dates, five API runs, three fresh contexts per page and one warmup; no concurrent QA/build/dev work. Shipping artifacts: /tmp/atlantis-frontend-overhaul/perf/layer4-shipping/results.json. Full gates pass with 220 web and 70 e2e tests.

```

## Parents

- [10bf5abd29ca4f9d689ed08613924c1fb8384874](https://git.cafe/flambo/atlantis/commit/10bf5abd29ca4f9d689ed08613924c1fb8384874?format=markdown)

[Source at this commit](https://git.cafe/flambo/atlantis/tree/2bc80bb9fd44420995eee6b4e40ca4a6cd0871c3?format=markdown)