Add URL trigger expansion and marketing asset scripts

[superhighfives]

Summary

• Extends pika:// URL scheme with 12 new actions for setting colors, controlling the history drawer, opening windows, resizing, and forcing appearance
• Updates HelpView with all new trigger groups
• Adds build/marketing/ scripts (capture.sh, generate.ts, manifest.json) for automated marketing screenshot capture and compositing at release time

New URL triggers

URL	Action
pika://set/foreground/<hex>	Set foreground color
pika://set/background/<hex>	Set background color
pika://history/show	Show history drawer
pika://history/hide	Hide history drawer
pika://history/toggle	Toggle history drawer
pika://window/about	Open About window
pika://window/help	Open Help window
pika://window/preferences	Open Preferences window
pika://window/resize/<w>/<h>	Resize main window
pika://appearance/light	Force light appearance
pika://appearance/dark	Force dark appearance
pika://appearance/system	Restore system appearance

Marketing scripts

cd pika
npm install --prefix build/marketing
npx tsx build/marketing/generate.ts --version 1.3.0 --all

Outputs versioned assets to pika-releases/Marketing/v<version>/ — web JPGs (@2x + @1x) and shadow-trimmed Figma PNGs.

Test plan

• pika://set/foreground/fbbf24 updates foreground color to yellow
• pika://set/background/e74661 updates background color to red
• pika://history/show opens drawer when hidden; hide closes when open; toggle flips state
• pika://window/about, /help, /preferences open correct windows
• pika://window/resize/480/300 resizes window to 480×300pt
• pika://appearance/dark forces dark mode; /light forces light; /system restores following
• Help view displays all new trigger groups

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR adds a color history feature (with a drawer UI and navigation), introduces a dedicated Help window, expands pika:// URL automation, and updates localizations + ancillary tooling to support these additions.

Changes:

• Add persistent color history storage with a bottom “history drawer”, toggle UI, and keyboard/navigation actions.
• Introduce a new Help window/view that documents shortcuts and URL triggers, and add Help entry points in the app menu.
• Expand URL scheme handling (pika://set, pika://history, pika://window, pika://appearance) and add marketing screenshot generation scripts.

Reviewed changes

Copilot reviewed 27 out of 30 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
Pika/Views/NavigationMenuItems.swift	Adds menu items for toggling history and opening Help.
Pika/Views/NavigationMenu.swift	Adds a toolbar toggle button for the history drawer + a hidden shortcut binding.
Pika/Views/KeyboardShortcutKey.swift	Adjusts shortcut key UI sizing.
Pika/Views/KeyboardShortcutGrid.swift	Reworks shortcut grid layout and adds history shortcut entry.
Pika/Views/HelpView.swift	New Help window content (shortcuts, URL triggers, formats, links).
Pika/Views/ContentView.swift	Integrates the history drawer, history recording, and history navigation notifications.
Pika/Views/ColorHistoryDrawer.swift	New history drawer UI (chips, context menu actions, clear button).
Pika/Views/AboutView.swift	Refactors About UI and reuses the external link row component.
Pika/Services/WindowCoordinator.swift	Adds Help window creation and adjusts window sizing.
Pika/Services/URLSchemeHandler.swift	Adds new URL actions (set/history/window/appearance) and refactors parsing.
Pika/Services/Eyedroppers.swift	Implements history recording, undo/redo stacks, and history navigation/apply operations.
Pika/Services/ColorPair.swift	New model for storing a foreground/background pair in Defaults.
Pika/Constants/Defaults.swift	Adds Defaults keys for history + undo/redo stacks + drawer visibility.
Pika/Constants/Constants.swift	Adds notification names and localized strings for Help + History.
Pika/Assets/zh-Hant.lproj/Localizable.strings	Adds Traditional Chinese localization file content for new strings.
Pika/Assets/zh-Hans.lproj/Localizable.strings	Adds Simplified Chinese localization file content for new strings.
Pika/Assets/pl.lproj/Localizable.strings	Adds Help/History strings in Polish.
Pika/Assets/hr.lproj/Localizable.strings	Adds Help/History strings in Croatian.
Pika/Assets/fr.lproj/Localizable.strings	Adds Help/History strings in French.
Pika/Assets/es.lproj/Localizable.strings	Adds Help/History strings in Spanish.
Pika/Assets/en.lproj/Localizable.strings	Adds Help/History strings in English.
Pika/Assets/de.lproj/Localizable.strings	Adds Help/History strings in German.
Pika/Assets/Base.lproj/Main.storyboard	Adds menu actions/items for history toggling and navigation.
Pika/AppDelegate.swift	Wires new actions, adds key monitoring for history navigation, switches undo/redo to new stack logic.
Pika.xcodeproj/project.pbxproj	Adds new source files to targets and bumps version numbers.
build/marketing/package.json	Adds Node deps for marketing asset generation.
build/marketing/manifest.json	Defines capture/composite manifest for marketing screenshots.
build/marketing/generate.ts	Adds capture/composite/figma export pipeline script.
build/marketing/capture.sh	Adds shell helper to drive Pika via URL triggers and capture window screenshots.
.gitignore	Updates ignored build outputs and ignores marketing capture output directory.

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[superhighfives]

Addressed all five review comments in b1787af:

• pika://set/... URL parsing — handleSet was receiving arg2 (nil) instead of arg1 (the hex value). Fixed: hex: arg2 → hex: arg1.
• Empty undo snapshot on first pick — recordHistory() was calling pushUndo() unconditionally, snapshotting an empty [] on the very first entry. Fixed: pushUndo() is now skipped when colorHistory is empty.
• swap() crash on empty history — history[index] could trap if undo restored an empty snapshot. Fixed: added guard !history.isEmpty else { return }.
• Stale comment in ColorPair — removed the isActivePair comparison always holds clause; active tracking is by id, not hex equality.
• History toggle shortcut — hidden SwiftUI button was registered as ⌘Y instead of plain H. Fixed: .keyboardShortcut("h", modifiers: []).