rdmbair15m5-changelog-20260822-1545-eostty-milestone1-implementation

Implemented production-grade Swift 6 Milestone 1 codebase and full unit test suite for eosTTY on Apple Silicon macOS.

Scope

• Host: rdmbair15m5
• Project: /Users/richh/teamwork_projects/eostty

Exact Files Touched / Created

• Package.swift: Swift 6 package manifest configured with strict concurrency (-strict-concurrency=complete) and all library/executable/test targets.
• Sources/TerminalCore/PTY/TermiosConfig.swift: Raw/interactive termios disciplines, window size geometry propagation (TIOCSWINSZ/TIOCGWINSZ).
• Sources/TerminalCore/PTY/PTYSession.swift: Darwin POSIX PTY allocation (openpty), PTYChannel, PTYStreamIO non-blocking async stream, SessionProcessSpawner via posix_spawn.
• Sources/TerminalCore/PTY/PTYController.swift: Actor-isolated PTY session controller for async write/read stream lifecycle and child exit handler.
• Sources/TerminalCore/Engine/ScrollbackBuffer.swift: Bounded ring buffer for terminal lines/cells, string search, and packed attribute memory management.
• Sources/TerminalCore/Engine/TerminalState.swift: ANSI/VT100/Xterm/TrueColor state machine, primary/alternate screen buffers, SGR parsing, cursor tracking.
• Sources/TerminalCore/Engine/GhosttyBridge.swift: High-throughput actor bridge wrapping terminal state and streaming I/O.
• Sources/TerminalCore/Session/SwitchProfile.swift: Switch roles, protocols, credentials, and process spawn configuration.
• Sources/TerminalCore/Session/SessionManager.swift: Multi-session tab coordinator, @Observable view models, and keyboard navigation.
• Sources/MetalRenderer/Shaders/QuadShaders.metal: MSL 4.0 instanced quad, pulsing cursor, and curly underline decoration shaders.
• Sources/MetalRenderer/Shaders/TextShaders.metal: MSL 4.0 instanced monochrome text and color emoji shaders.
• Sources/MetalRenderer/GlyphAtlas.swift: CoreText glyph rasterization, subpixel quantizing, dual-texture shelf packing, generational eviction, font cascade.
• Sources/MetalRenderer/LiquidGlassTheme.swift: Arista theme color palettes (aristaDark, eosLight, aristaNight, eosSolarizedSlate) with SIMD conversions.
• Sources/MetalRenderer/MetalRenderer.swift: Triple-buffered Metal render pipeline, dirty-region quad batcher, embedded MSL fallback compiler.
• Sources/MetalRenderer/MetalTerminalView.swift: AppKit MTKView and SwiftUI NSViewRepresentable bridge with keyboard/mouse coordinate mapping.
• Sources/eosTTY/App.swift, WindowManager.swift, Views/MainSplitView.swift, Views/TabBarView.swift, Views/SidecarDockView.swift: SwiftUI app entry point, window manager, tab bar, dockable sidecar shell.
• Downstream stubs: Sources/KittyGraphics/, Sources/EAPIEngine/, Sources/TelemetryVisualizer/, Sources/CutoverAndTAC/.
• Test suites: Tests/TerminalCoreTests/, Tests/MetalRendererTests/, and integration test suites.

Verification Evidence

• swift build: 0 errors, 0 compiler warnings.
• swift test --filter TerminalCoreTests: 24/24 tests passing (100%).
• swift test --filter MetalRendererTests: 13/13 tests passing (100%).
• swift test --filter Tier1_PTYAndGhosttyTests: 10/10 tests passing (100%).
• swift test --filter Tier1_MetalRendererAndTabsTests: 10/10 tests passing (100%).

Outstanding Owner Actions

• None. Milestone 1 implementation complete and verified.