ci(linux): revert fix for ubunutu

.gitea/workflows/build-linux.yml

@@ -26,10 +26,10 @@ env:
 jobs:
   build-x64:
     name: build-linux-x64
-    # Distro-agnostic: any Linux runner provisioned by ci/runners/linux/provision.sh
-    # carries `self-hosted`, `Linux`, `X64`. To target a specific distro
-    # (e.g. force Debian 13), append its label: [self-hosted, Linux, X64, debian-13].
-    runs-on: [self-hosted, Linux, X64]
+    # Pinned to ubuntu-22.04 because flutter_rust_bridge_codegen 1.80.1 emits
+    # broken Dart on Debian 13 (matches upstream rustdesk's bridge.yml host).
+    # provision.sh tags Ubuntu 22.04 hosts with the `ubuntu-22.04` label.
+    runs-on: [self-hosted, Linux, X64, ubuntu-22.04]
     timeout-minutes: 240
     env:
       VCPKG_ROOT: /opt/vcpkg
@@ -146,65 +146,6 @@ jobs:
           (cd flutter && git checkout -- pubspec.yaml)
           (cd flutter && /opt/flutter/bin/flutter pub get)
 
-          # ============================================================
-          # CRITICAL FIX for flutter_rust_bridge_codegen 1.80.1 on Linux
-          # ============================================================
-          # flutter_rust_bridge_codegen 1.80.1 emits a stray
-          #   typedef bool = ffi.NativeFunction<ffi.Int Function(ffi.Pointer<ffi.Int>)>;
-          # line near the end of generated_bridge.dart on Linux (the Windows
-          # generation does not hit this codepath). That typedef shadows
-          # dart:core.bool for the whole library AND every part file (notably
-          # generated_bridge.freezed.dart), corrupting every `bool` reference in
-          # the codebase. Symptoms include:
-          #   - "Type 'Int' not found" / "Type 'Pointer' not found" in .freezed.dart
-          #   - "value of type 'bool' can't be assigned to NativeFunction<...>"
-          #     in every model file
-          #   - the wire class's `int ptr` mismatching its parent's
-          #     Pointer<NativeFunction<Bool ...>> type
-          #
-          # Drop the line. References to `bool` then resolve to dart:core.bool
-          # as every line of source code actually intends.
-          sed -i '/^typedef bool = /d' flutter/lib/generated_bridge.dart
-          if grep -n '^typedef bool = ' flutter/lib/generated_bridge.dart >/dev/null; then
-              echo "ERROR: stray 'typedef bool' still present in generated_bridge.dart" >&2
-              grep -n '^typedef bool = ' flutter/lib/generated_bridge.dart >&2
-              exit 1
-          fi
-          echo "Stripped stray 'typedef bool = ...' line from generated_bridge.dart"
-
-          # Second bug: inside `ffi.NativeFunction<...>` template arguments,
-          # inner FFI types `Int` and `Pointer` are emitted without the `ffi.`
-          # prefix that the parent file's `import 'dart:ffi' as ffi;` requires.
-          for f in flutter/lib/generated_bridge.dart flutter/lib/generated_bridge.freezed.dart; do
-              [ -f "$f" ] || continue
-              sed -i -E '
-                  s/([^A-Za-z0-9_.])Pointer</\1ffi.Pointer</g
-                  s/([^A-Za-z0-9_.])Int([> ,)])/\1ffi.Int\2/g
-              ' "$f"
-          done
-
-          # Third bug: codegen emits `ffi.Pointer<bool>` (lowercase Dart bool,
-          # which isn't a NativeType) instead of `ffi.Pointer<ffi.Bool>` (the
-          # FFI Bool marker type that satisfies Pointer's bound). Same for any
-          # `ffi.Pointer<bool*>` variants if they appear (defensive). This also
-          # has to NOT touch `bool` outside Pointer<>.
-          sed -i 's/ffi\.Pointer<bool>/ffi.Pointer<ffi.Bool>/g' flutter/lib/generated_bridge.dart
-
-          # Fourth bug: the wire class's override of store_dart_post_cobject has
-          # parameter type `int` (web/stub form) but the active native parent
-          # in flutter_rust_bridge expects
-          #   Pointer<NativeFunction<Bool Function(Int64, Pointer<Void>)>>
-          # The internal _lookup is `Void Function(Int)` so we pass ptr.address.
-          # Confine the substitution to the lines between `void
-          # store_dart_post_cobject(` and the closing `);` to avoid touching
-          # other functions.
-          sed -i '/void store_dart_post_cobject(/,/);/ {
-              s|    int ptr,|    ffi.Pointer<ffi.NativeFunction<ffi.Bool Function(ffi.Int64, ffi.Pointer<ffi.Void>)>> ptr,|
-              s|      ptr,|      ptr.address,|
-          }' flutter/lib/generated_bridge.dart
-
-          echo "Applied flutter_rust_bridge 1.80.1 Linux-output workarounds (4 patches)"
-
       - name: Diagnose generated bridge files
         shell: bash
         run: |