chore: replace Taskfile with .core/build.yaml

Build config now in .core/build.yaml — `core build` handles
CGO=0 default builds. FrankenPHP (CGO=1) handled separately.

Co-Authored-By: Virgil <virgil@lethean.io>

.core/build.yaml

@@ -0,0 +1,28 @@
+# Core PHP build configuration
+# Used by: core build
+
+version: 1
+
+project:
+  name: core-php
+  description: PHP development CLI with FrankenPHP integration
+  main: ./cmd/core-php
+  binary: core-php
+
+build:
+  cgo: false
+  flags:
+    - -trimpath
+  ldflags:
+    - -s
+    - -w
+
+targets:
+  - os: linux
+    arch: amd64
+  - os: linux
+    arch: arm64
+  - os: darwin
+    arch: arm64
+  - os: windows
+    arch: amd64

Taskfile.yml

@@ -1,23 +0,0 @@
-version: '3'
-
-tasks:
-  build:
-    desc: Build core-php binary
-    cmds:
-      - CGO_ENABLED=0 go build -o ./bin/core-php ./cmd/core-php
-
-  build-frankenphp:
-    desc: Build with FrankenPHP support (needs PHP-ZTS)
-    cmds:
-      - go build -o ./bin/core-php ./cmd/core-php
-
-  test:
-    desc: Run tests
-    cmds:
-      - CGO_ENABLED=0 go test ./...
-
-  run:
-    desc: Build and run
-    cmds:
-      - task: build
-      - ./bin/core-php {{.CLI_ARGS}}