P9-02: Incremental routing that never triggers global component drift #50

New Issue

Rbanh · 2026-02-19T23:28:01-05:00

Rbanh commented

2026-02-19 23:28:01 -05:00

Scope:

Decouple reroute from placement moves by default.
Recompute only impacted nets after drag/edit, with local channel reservation.
Preserve locked component coordinates strictly.
Keep tie-net fallback deterministic under congestion.

Acceptance:

Dragging one component never moves unrelated components unless explicit auto-layout/tidy is invoked.
Route updates remain local and visually stable.
Congested cases prefer tie-nets/net stubs over spaghetti detours.

Scope: - Decouple reroute from placement moves by default. - Recompute only impacted nets after drag/edit, with local channel reservation. - Preserve locked component coordinates strictly. - Keep tie-net fallback deterministic under congestion. Acceptance: - Dragging one component never moves unrelated components unless explicit auto-layout/tidy is invoked. - Route updates remain local and visually stable. - Congested cases prefer tie-nets/net stubs over spaghetti detours.

Rbanh added this to the Phase 9 - Layout & Readability Production Hardening milestone 2026-02-19 23:28:18 -05:00

Rbanh referenced this issue

2026-02-19 23:28:38 -05:00

P9-00: Master tracker for layout/readability production hardening #48

Rbanh commented

2026-02-19 23:33:57 -05:00

Progress update (77f63a6):

Local drag behavior changed to single-component by default.
Explicit modifier (Alt) required for group drag.

This is a first hardening step for the no-global-drift objective; routing/locality work remains open.

Progress update (`77f63a6`): - Local drag behavior changed to single-component by default. - Explicit modifier (`Alt`) required for group drag. This is a first hardening step for the no-global-drift objective; routing/locality work remains open.

Rbanh commented

2026-02-20 00:11:25 -05:00

Stability note after fc5f2fe:

Improved placement seeding reduced long-route detour spikes that were surfacing as post-edit instability and poor tidy outcomes.
Local drag behavior fix (77f63a6) + preserve-placement compile behavior (5f31542) remains in effect.

Routing-locality work still open, but this improves baseline behavior before deeper incremental reroute changes.

Stability note after `fc5f2fe`: - Improved placement seeding reduced long-route detour spikes that were surfacing as post-edit instability and poor tidy outcomes. - Local drag behavior fix (`77f63a6`) + preserve-placement compile behavior (`5f31542`) remains in effect. Routing-locality work still open, but this improves baseline behavior before deeper incremental reroute changes.

Rbanh commented

2026-02-20 01:24:51 -05:00

Completed by commits 5f31542, 77f63a6, cf3e64e, and 128c5c6.

Delivered:

Default compile path preserves placement (preserve_placement: true) so local edits do not trigger global movement.
Drag behavior defaults to single-component move; group drag is explicit.
/layout/tidy and /layout/auto are the only intended global relayout actions.
UI regression runner hardened with compile-status settle checks to eliminate race-induced snapshot drift.

Validation:

npm test pass
npm run test:ui pass
UI metrics report shows 0 crossings/0 overlaps across initial/drag/tidy canonical states.

Closing issue as accepted.

Completed by commits `5f31542`, `77f63a6`, `cf3e64e`, and `128c5c6`. Delivered: - Default compile path preserves placement (`preserve_placement: true`) so local edits do not trigger global movement. - Drag behavior defaults to single-component move; group drag is explicit. - `/layout/tidy` and `/layout/auto` are the only intended global relayout actions. - UI regression runner hardened with compile-status settle checks to eliminate race-induced snapshot drift. Validation: - `npm test` pass - `npm run test:ui` pass - UI metrics report shows 0 crossings/0 overlaps across initial/drag/tidy canonical states. Closing issue as accepted.

Rbanh closed this issue

2026-02-20 01:25:19 -05:00

Rbanh referenced this issue

2026-02-20 01:25:27 -05:00

P9-00: Master tracker for layout/readability production hardening #48

Rbanh referenced this issue

2026-02-20 01:32:25 -05:00

P9-00: Master tracker for layout/readability production hardening #48

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