fix: improve guided manipulation and snap target affordances

[Aymericr]

Summary

• make constrained manipulation the default, with Shift documented and surfaced as the free-placement/free-rotation override
• refresh the editor shortcut dialog and floating contextual helpers, including compact two-line shortcut tips
• fix selection/direct manipulation edge cases: item multi-select routing, inverted Cmd/Ctrl right-drag rotation, node-normal floorplan rotation, guide continuity, and stale wall/roof move targets
• normalize wall/ceiling/roof snap-target badges for structure/sidebar/catalog consumers

Verification

• bun test packages/editor/src/lib/direct-manipulation.test.ts packages/editor/src/lib/selection-routing.test.ts packages/editor/src/lib/contextual-help.test.ts packages/editor/src/components/ui/snap-target-badge.test.tsx
• bunx biome check <touched editor/node files>
• bunx turbo run check-types --filter=@pascal-app/editor --filter=@pascal-app/nodes --force
• bun run build

Notes

• Build exits cleanly. The editor app still logs the existing Next/Turbopack NFT tracing warnings for scene-store routes.

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Project	Status	Preview	Updated (UTC)
pascal	🔴 Failed	–	Jun 12, 2026, 3:53 AM

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