Add DOFFIN_API_KEY credential template and gitignore entry

Follows the existing 99-eulerpool pattern: tracked .example template
with a placeholder, real 99-doffin file kept out of git.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.gitignore

@@ -6,3 +6,4 @@
 99-replicate
 99-podman-kode
 99-eulerpool
+99-doffin

20-build-tools

@@ -1,12 +1,20 @@
 # shellcheck shell=bash
-# Configure C/C++ build tools:
-# - Use Ninja instead of Make for CMake builds (faster parallel builds)
-# - Use ccache to cache compilations and speed up rebuilds
+# Build tool settings: Ninja/CMake, sccache, Podman/Buildah
+
 if command -v ninja &>/dev/null; then
     export NINJA_STATUS="[%e sec | %p (%u remaining) | %o / sec] "
     export CMAKE_GENERATOR=Ninja
 fi
+
 if command -v ccache &>/dev/null; then
     export CMAKE_C_COMPILER_LAUNCHER=ccache
     export CMAKE_CXX_COMPILER_LAUNCHER=ccache
 fi
+
+if command -v sccache &>/dev/null; then
+    export SCCACHE_CACHE_SIZE="40G"
+fi
+
+if command -v podman &>/dev/null; then
+    export BUILDAH_FORMAT=docker
+fi

20-ollama

@@ -1,3 +1,3 @@
 # shellcheck shell=bash
 # Point Ollama CLI at the remote Ollama server (default: goblin:11434)
-export OLLAMA_HOST="${OLLAMA_HOST:-192.168.1.84:11434}"
+export OLLAMA_HOST="${OLLAMA_HOST:-100.70.100.115:11434}"

20-sccache

@@ -1,5 +0,0 @@
-# shellcheck shell=bash
-# Configure sccache (shared compilation cache)
-if command -v sccache &>/dev/null; then
-    export SCCACHE_CACHE_SIZE="40G"
-fi

99-doffin.example

@@ -0,0 +1,5 @@
+# shellcheck shell=bash
+# Doffin API key
+# Copy to 99-doffin and fill in your key, then: chmod 700 99-doffin
+#require_private "${BASH_SOURCE[0]}"
+export DOFFIN_API_KEY=your-api-key-here