fix(build): resolve gcl_sdk migrations path instead of hardcoding python3.14

The path baked in python3.14 literally, so it silently broke
ra-apply-migration whenever the venv's actual interpreter version
differs (e.g. python3.12). Resolve it via gcl_sdk.migrations.__file__
in the already-activated venv instead.

Author: VasilyStepanov

exordos/images/bootstrap.sh

@@ -154,7 +154,8 @@ log "Apply migrations"
 source "$VENV_PATH/bin/activate"
 # TODO(akremenetsky): Database configuration parameters should be taken
 # from persistent configuration file.
-ra-apply-migration --config-dir "$GC_CFG_DIR/" --path "$GC_PATH/.venv/lib/python3.14/site-packages/gcl_sdk/migrations"
+GCL_SDK_MIGRATIONS_PATH=$(python3 -c "import os, gcl_sdk.migrations as m; print(os.path.dirname(m.__file__))")
+ra-apply-migration --config-dir "$GC_CFG_DIR/" --path "$GCL_SDK_MIGRATIONS_PATH"
 ra-apply-migration --config-dir "$GC_CFG_DIR/" --path "$GC_PATH/migrations"
 
 # --- Meta file migrations ---

exordos/images/install.sh

@@ -234,7 +234,8 @@ sudo cp "$GC_PATH/etc/exordos_universal_agent/logging.yaml" /etc/exordos_univers
 # 1) The bootstrap script will transfer the data to the data disk
 # 2) It's speed up the first run since the migrations are already applied.
 # 3) It's allows to debug the migrations at build time.
-OS_DB__CONNECTION_URL="postgresql://$GC_PG_USER:$GC_PG_PASS@127.0.0.1:5432/$GC_PG_DB" ra-apply-migration --path "$GC_PATH/.venv/lib/python3.14/site-packages/gcl_sdk/migrations"
+GCL_SDK_MIGRATIONS_PATH=$(python3 -c "import os, gcl_sdk.migrations as m; print(os.path.dirname(m.__file__))")
+OS_DB__CONNECTION_URL="postgresql://$GC_PG_USER:$GC_PG_PASS@127.0.0.1:5432/$GC_PG_DB" ra-apply-migration --path "$GCL_SDK_MIGRATIONS_PATH"
 OS_DB__CONNECTION_URL="postgresql://$GC_PG_USER:$GC_PG_PASS@127.0.0.1:5432/$GC_PG_DB" ra-apply-migration --path "$GC_PATH/migrations"
 
 deactivate