fix: remove disinto-specific TOML fallback and fix load-project.sh path in edge entrypoint

- Remove hardcoded `disinto.toml` as default TOML search path; scan
  projects/ directory for any .toml instead
- Fix load-project.sh path: use FACTORY_ROOT (consistent with the rest
  of the block) instead of SCRIPT_ROOT/BASH_SOURCE which resolves to
  /usr/local/bin in the container — wrong for /opt/disinto/lib/

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker/edge/entrypoint-edge.sh

@@ -8,14 +8,9 @@ FORGE_URL="${FORGE_URL:-http://forgejo:3000}"
 
 # Derive FORGE_REPO from PROJECT_TOML if available, otherwise require explicit env var
 if [ -z "${FORGE_REPO:-}" ]; then
-  # Try to find and parse PROJECT_TOML
+  # Try to find a project TOML to derive FORGE_REPO from
   _project_toml="${PROJECT_TOML:-}"
-  if [ -z "$_project_toml" ]; then
-    # Default path for project TOML in container
-    _project_toml="${FACTORY_ROOT:-/opt/disinto}/projects/disinto.toml"
-  fi
-  # Also check the generic projects directory
-  if [ ! -f "$_project_toml" ] && [ -d "${FACTORY_ROOT:-/opt/disinto}/projects" ]; then
+  if [ -z "$_project_toml" ] && [ -d "${FACTORY_ROOT:-/opt/disinto}/projects" ]; then
     for toml in "${FACTORY_ROOT:-/opt/disinto}"/projects/*.toml; do
       if [ -f "$toml" ]; then
         _project_toml="$toml"
@@ -26,7 +21,7 @@ if [ -z "${FORGE_REPO:-}" ]; then
 
   if [ -n "$_project_toml" ] && [ -f "$_project_toml" ]; then
     # Parse FORGE_REPO from project TOML using load-project.sh
-    if source "${SCRIPT_ROOT:-$(dirname "${BASH_SOURCE[0]}")}/../lib/load-project.sh" "$_project_toml" 2>/dev/null; then
+    if source "${FACTORY_ROOT:-/opt/disinto}/lib/load-project.sh" "$_project_toml" 2>/dev/null; then
       if [ -n "${FORGE_REPO:-}" ]; then
         echo "Derived FORGE_REPO from PROJECT_TOML: $_project_toml" >&2
       fi