feat: complete vendor repos, add edge intelligence and WASM modules

- Add 154 missing vendor files (gitignore was filtering them)
  - vendor/midstream: 564 files (was 561)
  - vendor/sublinear-time-solver: 1190 files (was 1039)
- Add ESP32 edge processing (ADR-039): presence, vitals, fall detection
- Add WASM programmable sensing (ADR-040/041) with wasm3 runtime
- Add firmware CI workflow (.github/workflows/firmware-ci.yml)
- Add wifi-densepose-wasm-edge crate for edge WASM modules
- Update sensing server, provision.py, UI components

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

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

@@ -0,0 +1,35 @@
+/**
+ * @file power_mgmt.h
+ * @brief Power management for battery-powered ESP32-S3 CSI nodes.
+ *
+ * Implements light sleep between CSI collection bursts to reduce
+ * power consumption for battery-powered deployments.
+ */
+
+#ifndef POWER_MGMT_H
+#define POWER_MGMT_H
+
+#include <stdint.h>
+#include "esp_err.h"
+
+/**
+ * Initialize power management.
+ * Configures automatic light sleep when WiFi is idle.
+ *
+ * @param duty_cycle_pct  Active duty cycle percentage (10-100).
+ *                        100 = always on (default behavior).
+ *                        50 = active 50% of the time.
+ * @return ESP_OK on success.
+ */
+esp_err_t power_mgmt_init(uint8_t duty_cycle_pct);
+
+/**
+ * Get current power management statistics.
+ *
+ * @param active_ms     Output: total active time in ms.
+ * @param sleep_ms      Output: total sleep time in ms.
+ * @param wake_count    Output: number of wake events.
+ */
+void power_mgmt_stats(uint32_t *active_ms, uint32_t *sleep_ms, uint32_t *wake_count);
+
+#endif /* POWER_MGMT_H */