Add xenia-ui crate; switch analysis store to DuckDB

Workspace gains a new xenia-ui member that owns the winit/wgpu
window, the Xenos display pipeline (xenos_pipeline + render +
texture_cache_host), HUD font/blit shaders, and the input-bridge
plumbing the app uses to surface guest framebuffers and overlays.

Workspace dependencies grow accordingly: rusqlite is replaced with
duckdb (analysis pipeline now writes DuckDB stores), and tracing /
metrics / pprof / winit / wgpu / gilrs / pollster / crossbeam /
bytemuck are added at workspace level so xenia-ui and xenia-app
share versions. Cargo.lock regenerated.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

crates/xenia-ui/Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "xenia-ui"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+
+[dependencies]
+xenia-hid = { workspace = true }
+xenia-kernel = { workspace = true }
+xenia-memory = { workspace = true }
+anyhow = { workspace = true }
+tracing = { workspace = true }
+winit = { workspace = true }
+wgpu = { workspace = true }
+gilrs = { workspace = true }
+pollster = { workspace = true }
+crossbeam-utils = { workspace = true }
+bytemuck = { workspace = true }
+metrics = { workspace = true }
+xenia-gpu = { workspace = true }