feat: add Docker build cache preservation toggles and development logging

Add two new application settings to control Docker build cache invalidation:
- inject_build_args_to_dockerfile (default: true) - Skip Dockerfile ARG injection
- include_source_commit_in_build (default: false) - Exclude SOURCE_COMMIT from build context

These toggles let users preserve Docker cache when SOURCE_COMMIT or custom ARGs change frequently. Development-only logging shows which ARGs are being injected for debugging.

🤖 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>

resources/views/livewire/project/application/advanced.blade.php

@@ -22,6 +22,14 @@
             @endif
             <x-forms.checkbox helper="Disable Docker build cache on every deployment." instantSave
                 id="disableBuildCache" label="Disable Build Cache" canGate="update" :canResource="$application" />
+            <x-forms.checkbox
+                helper="When enabled, Coolify automatically adds ARG statements to your Dockerfile for build-time variables. Disable this if you manage ARGs manually in your Dockerfile to preserve Docker build cache."
+                instantSave id="injectBuildArgsToDockerfile" label="Inject Build Args to Dockerfile" canGate="update"
+                :canResource="$application" />
+            <x-forms.checkbox
+                helper="When enabled, SOURCE_COMMIT (git commit hash) is available during Docker build. Disable to preserve cache across different commits - SOURCE_COMMIT will still be available at runtime."
+                instantSave id="includeSourceCommitInBuild" label="Include Source Commit in Build" canGate="update"
+                :canResource="$application" />
 
             @if ($application->settings->is_container_label_readonly_enabled)
                 <x-forms.checkbox