dissolve app/ into repo root (D-056)

Single Flutter package at the repo root. All code, tests, assets,
and platform directories moved from app/ to root. Package renamed
from clide_app to clide — all imports rewritten. Merged pubspec
combines core (ffi) and app (flutter, yaml, xterm) dependencies.
Makefile simplified: no APP_PRESENT conditionals, no cd, no daemon
lifecycle. 317 tests pass.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lib/kernel/src/theme/themes/clide.yaml

@@ -0,0 +1,36 @@
+# clide — cool near-black + periwinkle (default)
+# Source: docs/claude-design/tokens/clide.yaml
+
+name: clide
+display_name: Clide
+dark: true
+
+palette:
+  background: "#20202C"
+  panel: "#1A1A24"
+  surface: "#242838"
+  muted: "#78809C"
+  foreground: "#E6E8F2"
+  secondary: "#B1BBE3"
+  primary: "#78A0F8"
+  accent: "#6C90DC"
+  success: "#7DD3A8"
+  warning: "#E6C370"
+  error: "#E87D7D"
+  info: "#78A0F8"
+  # extended palette keys for the design's richer vocabulary
+  surfaceHi: "#2C3046"
+  border: "#343850"
+  borderHi: "#3C445C"
+  textDim: "#8890AC"
+  textMute: "#545C84"
+  accentSoft: "#2178A0F8"
+
+syntax:
+  keyword: "#C792EA"
+  type: "#78A0F8"
+  string: "#A8D99B"
+  number: "#E6C370"
+  comment: "#545C84"
+  method: "#82B1FF"
+  punct: "#78809C"

lib/kernel/src/theme/themes/midnight.yaml

@@ -0,0 +1,36 @@
+# midnight — VS Code-adjacent muted dark
+# Source: docs/claude-design/tokens/midnight.yaml
+
+name: midnight
+display_name: Midnight
+dark: true
+
+palette:
+  background: "#1E1E1E"
+  panel: "#181818"
+  surface: "#252526"
+  muted: "#858585"
+  foreground: "#D4D4D4"
+  secondary: "#BBBBBB"
+  primary: "#569CD6"
+  accent: "#4785BD"
+  success: "#89D185"
+  warning: "#D7BA7D"
+  error: "#F48771"
+  info: "#569CD6"
+  onAccent: "#0B1220"
+  surfaceHi: "#2D2D2E"
+  border: "#333333"
+  borderHi: "#3F3F3F"
+  textDim: "#858585"
+  textMute: "#6A6A6A"
+  accentSoft: "#21569CD6"
+
+syntax:
+  keyword: "#C586C0"
+  type: "#4EC9B0"
+  string: "#CE9178"
+  number: "#B5CEA8"
+  comment: "#6A9955"
+  method: "#DCDCAA"
+  punct: "#858585"

lib/kernel/src/theme/themes/paper.yaml

@@ -0,0 +1,35 @@
+# paper — drafting sheet, red-pencil accent, light
+# Source: docs/claude-design/tokens/paper.yaml
+
+name: paper
+display_name: Paper
+dark: false
+
+palette:
+  background: "#F4F1EA"
+  panel: "#ECE7DB"
+  surface: "#FBF8F1"
+  muted: "#8A8A82"
+  foreground: "#1A1A1A"
+  secondary: "#4A4A4A"
+  primary: "#C14B2A"
+  accent: "#A03D20"
+  success: "#2D8A52"
+  warning: "#B88A2A"
+  error: "#B03A2A"
+  info: "#2A6FC1"
+  surfaceHi: "#ECE7DB"
+  border: "#1A1A1A"
+  borderHi: "#4A4A4A"
+  textDim: "#5E5E56"
+  textMute: "#A8A89E"
+  accentSoft: "#21C14B2A"
+
+syntax:
+  keyword: "#7B3F8C"
+  type: "#2A6FC1"
+  string: "#2D8A52"
+  number: "#B88A2A"
+  comment: "#8A8A82"
+  method: "#1E5D9E"
+  punct: "#4A4A4A"

lib/kernel/src/theme/themes/summer-night.yaml

@@ -0,0 +1,29 @@
+# Summer Night — ported from legacy clide v1.2.0.
+# Palette-only; the three-tier resolver fills semantic + surface from
+# defaults. Override sections land here as the token surface grows.
+
+name: summer-night
+display_name: Summer Night
+dark: true
+
+palette:
+  # Accents (legacy names: primary/secondary/accent)
+  primary: "#00a3d2"      # cyan
+  secondary: "#00a9b9"    # teal
+  accent: "#fa5f8b"       # pink
+
+  # Backgrounds
+  background: "#21262f"
+  surface: "#393e48"
+  panel: "#292e38"
+
+  # Text. `muted` is WCAG-AA-calibrated against `panel` — don't darken
+  # without re-running the a11y/contrast suite.
+  foreground: "#e2e8f5"
+  muted: "#a6adbb"
+
+  # Status
+  success: "#00ab9a"
+  warning: "#d08447"
+  error: "#f06c6f"
+  info: "#00a3d2"

lib/kernel/src/theme/themes/terminal.yaml

@@ -0,0 +1,35 @@
+# terminal — near-black + amber, tmux feel
+# Source: docs/claude-design/tokens/terminal.yaml
+
+name: terminal
+display_name: Terminal
+dark: true
+
+palette:
+  background: "#0A0A0A"
+  panel: "#000000"
+  surface: "#111111"
+  muted: "#7A7A7A"
+  foreground: "#E6E6E6"
+  secondary: "#BDBDBD"
+  primary: "#E0B050"
+  accent: "#C29438"
+  success: "#8FDC9B"
+  warning: "#E0B050"
+  error: "#E05050"
+  info: "#A3C4FF"
+  surfaceHi: "#181818"
+  border: "#242424"
+  borderHi: "#2E2E2E"
+  textDim: "#7A7A7A"
+  textMute: "#4A4A4A"
+  accentSoft: "#21E0B050"
+
+syntax:
+  keyword: "#E05050"
+  type: "#E0B050"
+  string: "#8FDC9B"
+  number: "#C792EA"
+  comment: "#4A4A4A"
+  method: "#A3C4FF"
+  punct: "#7A7A7A"