feat(frontend): add local 3D map view

[xiaolefang-dm]

Summary

• Add a 2D/3D toggle for the Operate local map panel
• Add a local 3D voxel view using a lightweight angled point-cloud projection
• Overlay trajectory, global path, footprint, nav target, and robot arrow in 3D mode
• Support fit/fill and pinch zoom for local map / 3D view
• Stream downsampled /planning/occupied_voxels data through the planning websocket

Notes

• Occupancy voxels are rendered as points
• 2D remains the default view

Screen.Recording.2026-05-16.at.14.05.17.mov

2026-05-18.08.48.36.mov

[github-actions]

cloc	github.com/AlDanial/cloc v 2.04 T=0.17 s (245.9 files/s, 36617.7 lines/s)

Language	files	blank	comment	code
Python	13	617	262	3457
Markdown	4	155	6	426
C++	4	60	38	409
Bourne Shell	15	41	9	272
Dockerfile	1	31	32	203
JSON	2	8	0	58
TOML	1	4	0	58
make	1	18	15	55
CMake	1	4	0	17
--------	--------	--------	--------	--------
SUM:	42	938	362	4955

[Qinrui-dm]

LGTM

[github-actions]

cloc	github.com/AlDanial/cloc v 2.04 T=0.17 s (241.9 files/s, 36018.5 lines/s)

Language	files	blank	comment	code
Python	13	617	262	3457
Markdown	4	155	6	426
C++	4	60	38	409
Bourne Shell	15	41	9	272
Dockerfile	1	31	32	203
JSON	2	8	0	58
TOML	1	4	0	58
make	1	18	15	55
CMake	1	4	0	17
--------	--------	--------	--------	--------
SUM:	42	938	362	4955

[github-actions]

cloc	github.com/AlDanial/cloc v 2.04 T=0.17 s (240.8 files/s, 35868.7 lines/s)

Language	files	blank	comment	code
Python	13	617	262	3457
Markdown	4	155	6	426
C++	4	60	38	409
Bourne Shell	15	41	9	272
Dockerfile	1	31	32	203
JSON	2	8	0	58
TOML	1	4	0	58
make	1	18	15	55
CMake	1	4	0	17
--------	--------	--------	--------	--------
SUM:	42	938	362	4955

[github-actions]

cloc	github.com/AlDanial/cloc v 2.04 T=0.13 s (322.2 files/s, 47989.1 lines/s)

Language	files	blank	comment	code
Python	13	617	262	3457
Markdown	4	155	6	426
C++	4	60	38	409
Bourne Shell	15	41	9	272
Dockerfile	1	31	32	203
JSON	2	8	0	58
TOML	1	4	0	58
make	1	18	15	55
CMake	1	4	0	17
--------	--------	--------	--------	--------
SUM:	42	938	362	4955