fix: rewrite preprocessor as standalone host exe, regenerate headers

.github/workflows/main.yml

@@ -1,66 +1,58 @@
 name: CI
 
 on:
-  create:
   push:
-    branches: master
-    paths:
-      - '**.zig'
+    branches: [master]
   pull_request:
-  schedule:
-    - cron: "0 13 * * *"
-  workflow_dispatch:
-
-concurrency:
-  group: ci-${{ github.ref }}
-  cancel-in-progress: true
 
 jobs:
   lint:
+    strategy:
+      fail-fast: false
+      matrix:
+        # 0.16 fmt cannot parse @fromBackingInt/@backingInt (0.17-renamed builtins) and
+        # 0.17 fmt rewrites @enumFromInt/@intFromEnum to those new names, so no single
+        # source can satisfy both formatters; lint with 0.16.0 only.
+        zig_version: ["0.16.0"]
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: mlugg/setup-zig@v2
         with:
-          version: 0.16.0
-      - run: zig fmt --check *.zig
+          version: ${{ matrix.zig_version }}
+      - run: zig fmt --check *.zig c/*.zig build.zig
 
   test-in-memory:
     strategy:
       fail-fast: false
       matrix:
         os: [ubuntu-24.04, windows-latest, macos-latest]
+        zig_version: ["0.16.0", "master"]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup zig
         uses: mlugg/setup-zig@v2
         with:
-          version: 0.16.0
+          version: ${{ matrix.zig_version }}
+          use-cache: true
+          cache-size-limit: 2048
 
       - name: Install qemu
         if: ${{ matrix.os == 'ubuntu-24.04' }}
         run: |
           sudo apt-get update -y && sudo apt-get install -y qemu-user-binfmt
 
-      - name: Restore cache
-        uses: actions/cache@v4
-        with:
-          path: |
-            zig-cache
-            ~/.cache/zig
-          key: ${{ runner.os }}-${{ matrix.os }}-zig-${{ github.sha }}
-          restore-keys: ${{ runner.os }}-${{ matrix.os }}-zig-
-
       - name: Run Tests in memory
         if: ${{ matrix.os == 'ubuntu-24.04' }}
         run: |
-          mkdir -p $ZIG_GLOBAL_CACHE_DIR/tmp
+          mkdir -p "$ZIG_GLOBAL_CACHE_DIR/tmp"
           zig build test -Dci=true -Din_memory=true --summary all -fqemu -fwine
       - name: Run Tests in memory
         if: ${{ matrix.os != 'ubuntu-24.04' }}
+        shell: bash
         run: |
-          mkdir -p $ZIG_GLOBAL_CACHE_DIR/tmp
+          mkdir -p "$ZIG_GLOBAL_CACHE_DIR/tmp"
           zig build test -Dci=true -Din_memory=true --summary all

.gitignore

@@ -8,3 +8,5 @@ core.*
 /fuzz/outputs
 .DS_Store
 /zig-pkg
+# Host binary built by the build script (the preprocessor)
+/zig-sqlite-preprocess