deploy.sh: source .env, add dagger to PATH from nix store

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

deploy.sh

@@ -2,10 +2,16 @@
 set -euo pipefail
 REPO_DIR="$(cd "$(dirname "$0")" && pwd)"
 
-# Add task from nix store if not already in PATH
-if ! command -v task &>/dev/null; then
-    TASK_BIN=$(ls -d /nix/store/*go-task-*/bin/task 2>/dev/null | sort -V | tail -1)
-    [ -n "$TASK_BIN" ] && export PATH="$(dirname "$TASK_BIN"):$PATH"
-fi
+# Load .env into environment
+set -a
+# shellcheck source=.env
+source "$REPO_DIR/.env"
+set +a
+
+# Add task and dagger from nix store if not already in PATH
+for pkg in "*go-task-*/bin/task" "*dagger-*/bin/dagger"; do
+    bin=$(ls -d /nix/store/$pkg 2>/dev/null | sort -V | tail -1)
+    [ -n "$bin" ] && export PATH="$(dirname "$bin"):$PATH"
+done
 
 exec python3 "$REPO_DIR/deploy_cron.py"