Files
road-compiler/.trellis/tasks/08-26-direct-edit-map-editor/task.json
que01 bc4b9a9717 feat: add direct edit handles behind directEdit flag
Steps 1-3 of the main map road interval editor.

EditSession keeps the command stack, undo/redo and previewSeq arbitration as
pure logic with no OpenLayers reference, so all of it is unit-tested in node.
Pointer displacement converts to meters through EPSG:4326 and spherical
distance: treating a 3857 delta as meters desyncs the geometry from the cursor
by 1/cos(latitude). Handle drags project onto the axis the manifest declares
and clamp to its range, so the client never writes a coordinate into a road
polygon.

All of it sits behind a directEdit flag that defaults to off. With the flag off
the workbench requests no manifest, creates no extra source and registers no
interaction, so behaviour matches main.

The ol-ext probe passed its three gates but is not adopted for road handles.
Transform translates by the raw pointer delta, so a handle detaches from its
clamped constraint value: a drag reading -24.1 m produced a draft of -5.4 m.
Production needs the handle position derived from the constraint instead, which
means owning the position update, so native OL PointerInteraction will carry
the drag. ol-ext stays out of package.json; the probe is kept as a manual
harness. Reserve handles are unreachable with the current solver, recorded in
research/ rather than worked around.

Also names the dead backend when an API response is empty, instead of
surfacing "Unexpected end of JSON input" from response.json().

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-27 14:59:11 +08:00

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{
"id": "direct-edit-map-editor",
"name": "direct-edit-map-editor",
"title": "主地图道路区间编辑器",
"description": "ol-ext 限时探针与主地图外缘/步行带/车道分隔/区间范围拖拽",
"status": "in_progress",
"dev_type": null,
"scope": null,
"package": null,
"priority": "P2",
"creator": "dingkang",
"assignee": "dingkang",
"createdAt": "2026-08-26",
"completedAt": null,
"branch": null,
"base_branch": "main",
"worktree_path": null,
"commit": null,
"pr_url": null,
"subtasks": [],
"children": [],
"parent": "08-26-direct-manipulation-road-editor",
"relatedFiles": [],
"notes": "",
"meta": {}
}