feat: major editor overhaul (assets, properties, timeline, fonts) (#709)

* feat: major editor overhaul (assets, properties, timeline, fonts)

Refactor editor core systems to standardize UI architecture and improve performance.

Assets & Properties:
- Replace monolithic property items with composable `Section` architecture.
- Add specialized sections for Transform, Blending, and Text.
- Implement `NumberField` with scrubbing and math evaluation.
- Add new ColorPicker with EyeDropper and multiple format support.
- Standardize asset panels using new `PanelView` layout.

Fonts & Stickers:
- Implement custom font atlas/sprite system for high-performance previews.
- Add virtualized FontPicker with search and favorites.
- Refactor stickers to use a provider-based architecture (icons, emoji, flags, shapes).
- Standardize sticker IDs to `provider:value` format.

Timeline & Interaction:
- Convert bookmarks to rich objects with notes, colors, and duration.
- Refactor drag-and-drop to use Command pattern (enabling proper undo/redo).
- Add Shift modifier to disable snapping during moves/resizes.
- Add new overlays for layout guides and text editing.

Renderer:
- Add support for multi-line text, custom line-height, and letter-spacing.
- Implement global composite operation (blend modes).
- Update sticker node to resolve dynamic provider IDs.

Infrastructure:
- Add storage migrations (v3->v6) for text weights, sticker IDs, and bookmarks.
- Update global styles and core UI components (Button, Input, Popover).

* add ts-nocheck directive to settings-legacy.tsx to suppress TypeScript errors

* fix: correct global composite operation assignment in TextNode to ensure proper blend mode handling

* deleted shadcn components with errors

* formatting

* fix linter issues

* migrate from next middleware to proxy

* add missing component back

* add breadcrumb back

* chore: add @radix-ui/react-primitive deps

* chore: more deps

* chore: add missing env vars to bun-ci

* next env

1 files changed, 14 insertions, 1 deletions

diff --git a/apps/web/src/constants/timeline-constants.tsx b/apps/web/src/constants/timeline-constants.tsx
index d6af3c3a..5ac0913a 100644
--- a/apps/web/src/constants/timeline-constants.tsx
+++ b/apps/web/src/constants/timeline-constants.tsx
@@ -1,5 +1,6 @@
 import type { TTimelineViewState } from "@/types/project";
-import type { TrackType } from "@/types/timeline";
+import type { BlendMode } from "@/types/rendering";
+import type { TrackType, Transform } from "@/types/timeline";
 import {
 	Happy01Icon,
 	MusicNote03Icon,
@@ -8,6 +9,16 @@ import {
 import { HugeiconsIcon } from "@hugeicons/react";
 import { OcVideoIcon } from "@opencut/ui/icons";
 
+export const DEFAULT_TRANSFORM: Transform = {
+	scale: 1,
+	position: { x: 0, y: 0 },
+	rotate: 0,
+};
+
+export const DEFAULT_OPACITY = 1;
+export const DEFAULT_BLEND_MODE: BlendMode = "normal";
+export const DEFAULT_BOOKMARK_COLOR = "#009dff";
+
 export const TRACK_COLORS: Record<TrackType, { background: string }> = {
 	video: {
 		background: "transparent",
@@ -32,6 +43,8 @@ export const TRACK_HEIGHTS: Record<TrackType, number> = {
 
 export const TRACK_GAP = 4;
 
+export const DRAG_THRESHOLD_PX = 5;
+
 export const TIMELINE_CONSTANTS = {
 	PIXELS_PER_SECOND: 50,
 	DEFAULT_ELEMENT_DURATION: 5,