fix(docker): Update Dockerfile paths from src/ to v1/src/

The source code was moved to v1/src/ but the Dockerfile still
referenced src/ directly, causing build failures. Updated all
COPY paths, uvicorn module paths, test paths, and bandit scan
paths. Also added missing v1/__init__.py for Python module
resolution.

Fixes #33

Co-Authored-By: claude-flow <ruv@ruv.net>

firmware/esp32-csi-node/main/nvs_config.h

@@ -0,0 +1,39 @@
+/**
+ * @file nvs_config.h
+ * @brief Runtime configuration via NVS (Non-Volatile Storage).
+ *
+ * Reads WiFi credentials and aggregator target from NVS.
+ * Falls back to compile-time Kconfig defaults if NVS keys are absent.
+ * This allows a single firmware binary to be shipped and configured
+ * per-device using the provisioning script.
+ */
+
+#ifndef NVS_CONFIG_H
+#define NVS_CONFIG_H
+
+#include <stdint.h>
+
+/** Maximum lengths for NVS string fields. */
+#define NVS_CFG_SSID_MAX     33
+#define NVS_CFG_PASS_MAX     65
+#define NVS_CFG_IP_MAX       16
+
+/** Runtime configuration loaded from NVS or Kconfig defaults. */
+typedef struct {
+    char     wifi_ssid[NVS_CFG_SSID_MAX];
+    char     wifi_password[NVS_CFG_PASS_MAX];
+    char     target_ip[NVS_CFG_IP_MAX];
+    uint16_t target_port;
+    uint8_t  node_id;
+} nvs_config_t;
+
+/**
+ * Load configuration from NVS, falling back to Kconfig defaults.
+ *
+ * Must be called after nvs_flash_init().
+ *
+ * @param cfg  Output configuration struct.
+ */
+void nvs_config_load(nvs_config_t *cfg);
+
+#endif /* NVS_CONFIG_H */