First real content under app/. Lays the whole Tier 0 foundation in one
commit because the pieces depend on each other circularly (kernel →
extension → widgets → built-ins all reference types from the layer
below); splitting would leave intermediate commits that don't compile.
Key shapes:
* bare WidgetsApp root — no Material, no Cupertino, no Scaffold.
ClideTheme InheritedWidget is the only source of tokens.
* ClideKernel InheritedWidget aggregates 18 services (settings,
project, extensions, theme, panels, events, ipc, commands +
palette + keybindings, clipboard, files, notify, dialog, tray,
secrets, os, net, focus, log, i18n). ExtensionContext exposes
them through a stable interface.
* ClideExtension + sealed ContributionPoint hierarchy (Tab,
StatusItem, Toolbar, Command, TrayItem, LayoutPreset). One
manifest ships N contributions into kernel slots.
* Three-tier theme pipeline: palette (named colors) → semantic
roles → ~60 surface tokens. Defaults at each layer so legacy
palette-only themes produce a complete SurfaceTokens.
* A11y baked in from day one — every interactive primitive wraps
in Semantics(label:, hint:, button:); ensureSemantics() at boot;
theme/contrast.dart helper exposes token pairs for the WCAG
gate in the a11y test suite.
* i18n ported from fframe's L10n pattern (text-driven, namespaced
JSON catalogs, caller-supplied placeholders) with a proper
locale fallback chain (exact → language → default → placeholder)
fframe lacks.
* Four Tier-0 built-ins live (default-layout, welcome, ipc-status,
theme-picker) plus 17 id-reserving stubs so later tiers fill in
without rename churn.
.gitignore extended to cover app/ sub-package artefacts and the
Playwright harness scratch dirs.
Co-Authored-By: Claude <noreply@anthropic.com>
jpmschweitzerandClaude
b13483e2d5