fix(Camera): infinite range [YTFRONT-6029]

[SimbiozizV]

Summary by Sourcery

Enhance camera interactions and canvas rendering with bounded, configurable zoom, synchronized range updates, typography token support, and event hover cursors.

New Features:

• Add configurable zoom sensitivity and minimum/maximum visible time ranges, including unlimited zoom-out by default.
• Add shared canvas font configuration with CSS variable and inherited-font resolution for built-in and custom renderers.
• Add event-specific hover cursors and a synchronous range-change event for synchronizing timelines.

Bug Fixes:

• Prevent camera zoom from producing ranges outside the supported timestamp bounds.
• Preserve the current range when debounced camera-change notifications are emitted.

Enhancements:

• Improve trackpad zoom behavior by smoothing small pixel deltas while retaining full steps for line and page wheel events.
• Support runtime view-configuration updates while preserving component-specific font overrides.
• Expand Storybook examples and user-facing API documentation for zoom limits, synchronized timelines, cursors, and fonts.

Documentation:

• Document zoom sensitivity and range limits, canvas font resolution, event cursors, and range synchronization in English and Russian guides and API references.

Tests:

• Add coverage for zoom behavior and limits, range-change synchronization, cursor ownership, font resolution and caching, and dynamic font configuration.

Chores:

• Add repository development and contribution guidance in AGENTS.md.

[sourcery-ai]

Reviewer's Guide

Camera zoom limits are now configurable in milliseconds, defaulting to a 5-second minimum and unrestricted zoom-out, with directional handling that avoids collapsing externally wider ranges. Documentation, regression tests, and a Storybook demonstration cover the new behavior.

File-Level Changes

Change	Details	Files
Replace hard-coded zoom bounds with configurable camera range limits and preserve unrestricted zoom-out by default.	Add optional millisecond-based minRange and maxRange camera settings, with a 5-second minimum default and no maximum by default. Compute zoom domains with directional boundary handling so externally initialized ranges above maxRange are not forcibly collapsed. Document the new options and updated default behavior.	src/TimelineController.ts src/types/configuration.ts README.md README-ru.md docs/Timeline.md docs/TimelineController.md
Add regression coverage for default, configured, and out-of-bounds zoom ranges.	Verify wide ranges can zoom in and out without default upper-limit collapse. Verify configured maximums clamp only ranges at or below the limit and minimums prevent collapse below the configured threshold.	tests/TimelineController.test.ts
Add an interactive Storybook example for exploring zoom range limits.	Provide unlimited, 60-day, and one-year maximum modes with live visible-range reporting. Initialize a 120-day timeline to demonstrate behavior for ranges beyond a configured maximum.	src/stories/Canvas.stories.tsx

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[gravity-ui-bot]

Preview is ready.

[sourcery-ai]

Hey - I've found 1 issue

Prompt for AI Agents

Please address the comments from this code review:

## Individual Comments

### Comment 1
<location path="src/TimelineController.ts" line_range="100-114" />
<code_context>
   ...interactions,
 });

+const getZoomDomain = (
+  domain: number,
+  factor: number,
+  minRange: number,
+  maxRange?: number,
+) => {
+  const nextDomain = domain * factor;
+
+  if (factor < 1) {
+    return domain <= minRange ? domain : Math.max(nextDomain, minRange);
+  }
+
+  if (maxRange === undefined) return nextDomain;
+
+  return domain >= maxRange ? domain : Math.min(nextDomain, maxRange);
+};
+
</code_context>
<issue_to_address>
**issue (bug_risk):** The zoom limits are applied independently, so a configuration with `minRange` greater than `maxRange` produces ranges that violate one of the configured limits: zoom-in clamps to `minRange`, while zoom-out clamps to `maxRange`. The public configuration type accepts this invalid combination without validation.

**Triggers:** When callers configure `minRange` greater than `maxRange`.

**Suggested fix:** Validate that both ranges are positive and `minRange <= maxRange`, or normalize/reject the configuration before handling wheel events.
</issue_to_address>

Sourcery assessment

Approval pending. 1 finding to address first.

Blocking findings: src/TimelineController.ts:114

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[sourcery-ai]

Sourcery assessment

Approved.