feat: initial project setup with camera control panel

3D printing project with Ender 3 V3 SE documentation, OctoPrint/Pi
infrastructure docs, and PTZ camera control webapp for two TENVIS
cameras proxied through Raspberry Pi to Frigate NVR.

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

.gitignore

@@ -0,0 +1,9 @@
+# Credentials
+octopi.sethpc.xzy_api_key.md
+GITEA_API.md
+.env
+
+# Symlinked templates
+SESSION.default.md
+CREATE_PROJECT.md
+PI3BPLUS.md

CLAUDE.md

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+# 3D Printing Project
+
+## Project Overview
+
+3D printing setup and management for two Creality Ender 3 printers, with OctoPrint remote control and IP camera monitoring via a Raspberry Pi proxy.
+
+## Hardware
+
+### Printer
+| Printer | Speed | Extruder | Auto-Level | Build Volume | Hot End |
+|---|---|---|---|---|---|
+| Creality Ender 3 V3 SE | 250 mm/s | Sprite Direct Drive | CR Touch | 220x220x250 mm | Standard |
+
+### Filament Inventory
+| Material | Color | Brand | Diameter |
+|---|---|---|---|
+| PLA | White | OVERTURE | 1.75 mm |
+| PLA | Black | OVERTURE | 1.75 mm |
+| PLA | Black | ELEGOO | 1.75 mm |
+| PLA | Dark Blue | ELEGOO | 1.75 mm |
+| PLA | Transparent | SUNLU | 1.75 mm |
+| ABS | Black | Creality | 1.75 mm |
+| PETG | Red | Creality | 1.75 mm |
+| PETG | Black | Creality | 1.75 mm |
+
+### Accessories
+- Creality Hardened Steel MK8 Nozzles (5-pack)
+
+## Remote Printing Infrastructure
+
+### Raspberry Pi 3 B+ (`seth-pi`)
+- **Hostname:** seth-pi
+- **OS:** Debian 13 (Raspberry Pi OS Lite)
+- **User:** seth (key-only SSH, no root login)
+- **wlan0:** 192.168.0.102 (main network, DHCP) — default route
+- **eth0:** 192.168.0.101/24 (isolated camera router subnet)
+- **WiFi SSID:** WiFrei
+
+### OctoPrint
+- **URL:** http://octopi.sethpc.xyz (port 5000 on Pi)
+- **API key:** see `octopi.sethpc.xzy_api_key.md`
+
+### go2rtc (v1.9.14)
+Restreams both cameras with H.264 hardware transcoding and MJPEG fallback.
+- **API:** http://192.168.0.102:1984
+- **RTSP:** rtsp://192.168.0.102:8554
+- **Streams:**
+  - `cam1` / `cam1_mjpeg` — Camera 1 (192.168.0.100)
+  - `cam2` / `cam2_mjpeg` — Camera 2 (192.168.0.103)
+
+### IP Cameras — TENVIS (on isolated eth0 subnet)
+Both TENVIS cameras use credentials `admin:admin` and expose RTSP on port 554 (`/11` path), HTTP on 80, and ONVIF on 8080.
+- **Internal model:** C9F0SeZ0N0P4L0 (Hi3510-based SoC)
+- **Firmware:** V9.1.6.1.24-20170925
+- **Hardware version:** V1.0.0.1
+- **CGI interface:** `/cgi-bin/hi3510/param.cgi`
+- **cam2 has an SD card inserted** (59GB)
+
+| Camera | Isolated IP | Proxy Ports (on .102) |
+|---|---|---|
+| cam1 | 192.168.0.100 | HTTP:18080, ONVIF:18081, RTSP:18554 |
+| cam2 | 192.168.0.103 | HTTP:28080, ONVIF:28081, RTSP:28554 |
+
+### Proxy Architecture
+The Pi bridges two networks:
+- **eth0** (192.168.0.101) connects to an isolated router with the two IP cameras
+- **wlan0** (192.168.0.102) connects to the main homelab network
+- **socat** systemd services proxy each camera port from the isolated subnet to the main network
+- Port scheme: `1xxxx` = cam1, `2xxxx` = cam2
+
+Proxy services (all systemd, auto-restart):
+- `ipcam-proxy-http.service` — 18080 -> 192.168.0.100:80
+- `ipcam-proxy-onvif.service` — 18081 -> 192.168.0.100:8080
+- `ipcam-proxy-rtsp.service` — 18554 -> 192.168.0.100:554
+- `ipcam2-proxy-http.service` — 28080 -> 192.168.0.103:80
+- `ipcam2-proxy-onvif.service` — 28081 -> 192.168.0.103:8080
+- `ipcam2-proxy-rtsp.service` — 28554 -> 192.168.0.103:554
+
+## Camera Control Panel
+- **URL:** http://192.168.0.220:8090
+- **Location:** `/opt/cam-control/server.py` on CT 241 (Frigate)
+- **Service:** `cam-control.service` (systemd, enabled)
+- **Features:** Live MJPEG feeds, PTZ D-pad (continuous/step), speed control, flip/mirror toggles
+- **Source:** `./cam-control/server.py`
+
+## Gitea
+- **Repo:** https://git.sethpc.xyz/Seth/3d-printing
+- **Remote:** `https://Seth:REDACTED_GITEA_TOKEN@git.sethpc.xyz/Seth/3d-printing.git`
+
+## Conventions
+- Camera credentials: admin/admin (default, isolated network only)
+- Pi SSH: key-only as `seth`, no password auth
+- Internal password for homelab services: REDACTED_PASSWORD

CONTEXT.md

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+I have a Creality Ender 3 V3 SE 3D Printer, 250mm/s Faster FDM 3D Printers with CR Touch Auto Leveling, Sprite Direct Extruder Auto-Load Filament Dual Z-axis & Y-axis, Printing Size 8.66 * 8.66 * 9.84 inch https://www.amazon.com/dp/B0DD7F2BH9?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_6&th=1
+OVERTURE PLA Filament 1.75mm PLA 3D Printer Filament, 1kg Cardboard Spool (2.2lbs), Dimensional Accuracy +/- 0.02mm, Fit Most FDM Printer (White 1-Pack)View order detailsOrdered on November 21, 2024
+OVERTURE PLA Filament 1.75mm PLA 3D Printer Filament, 1kg Cardboard Spool (2.2lbs), Dimensional Accuracy +/- 0.02mm, Fit Most FDM Printer (White 1-Pack)
+
+
+Buy it again
+View your item
+Creality ABS Filament 1.75mm, 3D Printer Filament, Excellent Resistance, Odorless Non-Toxic, Stability, Tough, 1kg(2.2lbs) Printing Filament for 3D Printer (Black)
+View order detailsOrdered on August 9, 2024
+Creality ABS Filament 1.75mm, 3D Printer Filament, Excellent Resistance, Odorless Non-Toxic, Stability, Tough, 1kg(2.2lbs) Printing Filament for 3D Printer (Black)
+
+
+Buy it again
+View your item
+Official Creality PETG 3D Printer Filament 1.75mm 1KG (2.2lbs), High Precision, Strong Toughness, Odorless, Better Flow, Moistureproof 3D Printing CR PETG Filament, Red
+View order detailsOrdered on August 9, 2024
+Official Creality PETG 3D Printer Filament 1.75mm 1KG (2.2lbs), High Precision Strong Toughness, Odorless Better Flow Moistureproof 3D Printing Ender Filament(Red)
+
+
+Buy it again
+View your item
+Official Creality PETG 3D Printer Filament 1.75mm 1KG (2.2lbs), High Precision, Strong Toughness, Odorless, Better Flow, Moistureproof 3D Printing CR PETG Filament, Black
+View order detailsOrdered on August 9, 2024
+Official Creality PETG 3D Printer Filament 1.75mm 1KG (2.2lbs), High Precision Strong Toughness, Odorless Better Flow Moistureproof 3D Printing Ender Filament(Black)
+
+
+Buy it again
+View your item
+SUNLU 3D Printer Filament PLA Filament 1.75mm, Neatly Wound 3D Printing Filament 1.75mm, Dimensional Accuracy +/- 0.02 mm, Fit Most FDM 3D Printers, 1kg Spool (2.2lbs), Transparent, Clear PLA
+View order detailsOrdered on August 9, 2024
+SUNLU 3D Printer Filament 1.75mm, Neatly Wound 3D Printing Filament, +/- 0.02 mm Dimensional Accuracy, Fits Most FDM Printers, 1kg Spool, Transparent PLA
+
+
+Buy it again
+View your item
+ELEGOO PLA Filament 1.75mm Black 1KG, 3D Printer Filament Dimensional Accuracy +/- 0.02mm, 1kg Cardboard Spool(2.2lbs) 3D Printing Filament Fits for Most FDM 3D Printers
+View order detailsOrdered on August 8, 2024
+ELEGOO PLA Filament 1.75mm Black 1KG, 3D Printer Filament Dimensional Accuracy +/- 0.02mm, 1kg Cardboard Spool(2.2lbs) 3D Printing Filament Fits for Most FDM 3D Printers
+
+
+Buy it again
+View your item
+ELEGOO PLA Filament 1.75mm Dark Blue 1KG, 3D Printer Filament Dimensional Accuracy +/- 0.02mm, 1kg Cardboard Spool(2.2lbs) 3D Printing Filament Fits for Most FDM 3D Printers
+View order detailsOrdered on August 8, 2024
+ELEGOO PLA Filament 1.75mm Dark Blue 1KG, 3D Printer Filament Dimensional Accuracy +/- 0.02mm, 1kg Cardboard Spool(2.2lbs) 3D Printing Filament Fits for Most FDM 3D Printers
+
+
+Buy it again
+View your item
+Creality 5 Packs Hardened Steel MK8 Nozzle for 3D Printers with High Temperature Resistance Upgraded Tungsten All Metal Nozzle Ends for Makerbot Ender 3 Ender-3 pro S1 CR-10 Series
+View order detailsOrdered on August 5, 2024
+Creality 5 Packs Hardened Steel MK8 Nozzle for 3D Printers with High Temperature Resistance Upgraded Tungsten All Metal Nozzle Ends for Makerbot Ender 3 Ender-3 pro S1 CR-10 Series
+
+
+Buy it again
+View your item
+OVERTURE PLA Filament 1.75mm, Neatly Wound 3D Printer Filament 1kg Spool (2.2lbs), Dimensional Accuracy +/- 0.02 mm, Fit Most FDM 3D Printers (Black 1-Pack)
+View order detailsOrdered on August 5, 2024
+OVERTURE PLA Filament 1.75mm PLA 3D Printer Filament, 1kg Cardboard Spool (2.2lbs), Dimensional Accuracy +/- 0.02mm, Fit Most FDM Printer (Black 1-Pack)
+
+
+Buy it again
+View your item
+Creality Ender 3 S1 3D Printer with Direct Drive Extruder CR Touch Auto Leveling High Precision Double Z-axis Screw Silent Board Printing Size 8.6X8.6X10.6in, Upgrade Ender 3 V2 for Beginners
+View order detailsOrdered on August 5, 2024
+Creality Ender 3 S1 Pro with 200mm/s Printing Speed, Sprite Direct Extruder CR Touch Auto Leveling 300℃ High-Temp Printing, Dual Z-axis Screw Printing Size 8.66 * 8.66 * 10.63''
+
+
+Buy it again
+View your item

SESSION.md

@@ -0,0 +1,81 @@
+# SESSION.md — 3D Printing Project
+
+## Context Files
+
+- `/root/bin/core_homelab.md` — cluster topology, SSH aliases
+- `/root/bin/services_directory.md` — active service IPs and domains
+- `/root/bin/SESSION.md` — global session memory
+- `./CONTEXT.md` — printer hardware, filament inventory, and accessories
+- `./GITEA_API.md` — Gitea push credentials and commit convention
+
+## Project Summary
+
+3D printing setup and management for a Creality Ender 3 homelab. Covers two printers (Ender 3 V3 SE and Ender 3 S1 Pro), filament inventory across PLA/PETG/ABS in multiple colors, and hardened steel MK8 nozzles. The CONTEXT.md file serves as an inventory of purchased hardware and consumables.
+
+## Memory Discipline
+
+- Update `SESSION.md` immediately when a durable fact, decision, or fix is discovered.
+- Before every final reply, run a memory check and append any missing durable notes.
+- End every reply with one line: `Session memory: updated` or `Session memory: no new durable facts.`
+
+## Hardware
+
+### Printer
+| Printer | Speed | Extruder | Auto-Level | Build Volume |
+|---|---|---|---|---|
+| Creality Ender 3 V3 SE | 250 mm/s | Sprite Direct Drive | CR Touch | 220 x 220 x 250 mm |
+
+### Filament Inventory
+| Material | Color | Brand | Diameter |
+|---|---|---|---|
+| PLA | White | OVERTURE | 1.75 mm |
+| PLA | Black | OVERTURE | 1.75 mm |
+| PLA | Black | ELEGOO | 1.75 mm |
+| PLA | Dark Blue | ELEGOO | 1.75 mm |
+| PLA | Transparent | SUNLU | 1.75 mm |
+| ABS | Black | Creality | 1.75 mm |
+| PETG | Red | Creality | 1.75 mm |
+| PETG | Black | Creality | 1.75 mm |
+
+### Accessories
+- Creality Hardened Steel MK8 Nozzles (5-pack) — for abrasive filaments
+
+## Gitea
+
+- Repo: https://git.sethpc.xyz/Seth/3d-printing
+- Remote: `https://Seth:REDACTED_GITEA_TOKEN@git.sethpc.xyz/Seth/3d-printing.git`
+- API key: see `./GITEA_API.md`
+
+## Session Notes
+
+### Initial setup (2026-03-17)
+- Created SESSION.md from template in SESSION.default.md
+- Organized CONTEXT.md inventory data into structured hardware/filament tables
+
+### Camera/Pi discovery (2026-03-24)
+- Pi 3B+ (`seth-pi`) found at 192.168.0.102 (wlan0) / 192.168.0.101 (eth0)
+- eth0 connects to isolated router with 2 IP cameras (192.168.0.100, 192.168.0.103)
+- 6 socat proxy services bridge camera HTTP/RTSP/ONVIF to main network
+- go2rtc v1.9.14 restreams both cameras (H.264 hw + MJPEG)
+- OctoPrint running on port 5000
+- Camera creds: admin/admin (default, isolated subnet)
+- Created CLAUDE.md with full infrastructure documentation
+- [x] Document OctoPrint setup — done, documented in CLAUDE.md
+- Camera make: TENVIS (both cameras)
+
+### Camera control panel (2026-03-24)
+- Built single-page PTZ control webapp (`cam-control/server.py`)
+- Deployed to Frigate CT 241 at http://192.168.0.220:8090
+- systemd service `cam-control.service` enabled and running
+- Features: dual MJPEG feeds via go2rtc, PTZ D-pad, speed, flip/mirror
+
+### OctoPrint timelapse fix (2026-03-24)
+- Pi fstab pointed to pve197 for tank SMB — updated to node-173 post-migration
+- Created octoprint Samba user on node-173 (creds: octoprint/octoprint)
+- Timelapses dir at /tank/Timelapses now accessible, OctoPrint restarted
+
+### Open threads
+- [x] Identified camera: TENVIS, internal model C9F0SeZ0N0P4L0 (Hi3510 SoC), firmware V9.1.6.1.24-20170925
+- [ ] Add slicer profiles and recommended print settings per filament type
+- [ ] Set up Gitea repo and push project files
+- [ ] Change default camera passwords (admin/admin)

cam-control/server.py

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+#!/usr/bin/env python3
+"""PTZ Camera Control Panel for two TENVIS cameras proxied via Raspberry Pi."""
+
+import json
+import urllib.request
+import urllib.parse
+from http.server import HTTPServer, BaseHTTPRequestHandler
+from socketserver import ThreadingMixIn
+
+CAMERAS = {
+    "cam1": {"host": "192.168.0.102", "http_port": 18080, "label": "Printer Cam 1"},
+    "cam2": {"host": "192.168.0.102", "http_port": 28080, "label": "Printer Cam 2"},
+}
+GO2RTC = "127.0.0.1:1984"
+AUTH = ("admin", "admin")
+PORT = 8090
+
+HTML = """<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>Camera Control</title>
+<style>
+  * { box-sizing: border-box; margin: 0; padding: 0; }
+  body { background: #1a1a2e; color: #e0e0e0; font-family: -apple-system, system-ui, sans-serif; }
+  h1 { text-align: center; padding: 16px 0 8px; font-size: 1.4rem; color: #c0c0c0; }
+  .grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; padding: 8px 16px 16px; }
+  .cam-panel {
+    background: #16213e; border-radius: 12px; padding: 12px;
+    flex: 1 1 480px; max-width: 640px; min-width: 320px;
+  }
+  .cam-label { text-align: center; font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; color: #a0c4ff; }
+  .feed { width: 100%; aspect-ratio: 16/9; background: #000; border-radius: 8px; object-fit: contain; }
+  .controls { display: flex; gap: 12px; margin-top: 10px; align-items: flex-start; justify-content: center; flex-wrap: wrap; }
+  .dpad {
+    display: grid; grid-template-columns: repeat(3, 48px); grid-template-rows: repeat(3, 48px);
+    gap: 4px;
+  }
+  .dpad button {
+    background: #0f3460; border: 1px solid #1a5276; border-radius: 8px; color: #e0e0e0;
+    font-size: 1.2rem; cursor: pointer; transition: background 0.15s;
+    display: flex; align-items: center; justify-content: center;
+  }
+  .dpad button:hover { background: #1a5276; }
+  .dpad button:active { background: #2980b9; }
+  .dpad .center { background: #c0392b; border-color: #e74c3c; font-size: 0.7rem; font-weight: 700; }
+  .dpad .center:hover { background: #e74c3c; }
+  .dpad .empty { visibility: hidden; }
+  .side-controls { display: flex; flex-direction: column; gap: 8px; }
+  .side-controls label { font-size: 0.8rem; color: #888; }
+  .side-controls select, .side-controls button {
+    background: #0f3460; border: 1px solid #1a5276; border-radius: 6px; color: #e0e0e0;
+    padding: 6px 10px; font-size: 0.85rem; cursor: pointer;
+  }
+  .side-controls select:hover, .side-controls button:hover { background: #1a5276; }
+  .toggle-row { display: flex; gap: 6px; }
+  .toggle-row button { flex: 1; font-size: 0.8rem; padding: 6px 8px; }
+  .toggle-row button.active { background: #2980b9; border-color: #3498db; }
+  .status { text-align: center; font-size: 0.75rem; color: #666; margin-top: 4px; min-height: 1.2em; }
+</style>
+</head>
+<body>
+<h1>Camera Control Panel</h1>
+<div class="grid" id="grid"></div>
+<script>
+const CAMS = """ + json.dumps({k: v["label"] for k, v in CAMERAS.items()}) + """;
+
+function buildPanel(camId, label) {
+  return `
+  <div class="cam-panel" id="panel-${camId}">
+    <div class="cam-label">${label}</div>
+    <img class="feed" id="feed-${camId}" alt="${label} feed">
+    <div class="controls">
+      <div class="dpad">
+        <div class="empty"></div>
+        <button onmousedown="ptz('${camId}','up',0)" onmouseup="ptz('${camId}','stop',0)" ontouchstart="ptz('${camId}','up',0)" ontouchend="ptz('${camId}','stop',0)">&#9650;</button>
+        <div class="empty"></div>
+        <button onmousedown="ptz('${camId}','left',0)" onmouseup="ptz('${camId}','stop',0)" ontouchstart="ptz('${camId}','left',0)" ontouchend="ptz('${camId}','stop',0)">&#9664;</button>
+        <button class="center" onclick="ptz('${camId}','home',1)">HOME</button>
+        <button onmousedown="ptz('${camId}','right',0)" onmouseup="ptz('${camId}','stop',0)" ontouchstart="ptz('${camId}','right',0)" ontouchend="ptz('${camId}','stop',0)">&#9654;</button>
+        <div class="empty"></div>
+        <button onmousedown="ptz('${camId}','down',0)" onmouseup="ptz('${camId}','stop',0)" ontouchstart="ptz('${camId}','down',0)" ontouchend="ptz('${camId}','stop',0)">&#9660;</button>
+        <div class="empty"></div>
+      </div>
+      <div class="side-controls">
+        <div>
+          <label>Step Mode</label>
+          <select id="step-${camId}">
+            <option value="0">Continuous (hold)</option>
+            <option value="1">Single step</option>
+          </select>
+        </div>
+        <div>
+          <label>Speed</label>
+          <select id="speed-${camId}" onchange="setSpeed('${camId}')">
+            <option value="1">1 (slow)</option>
+            <option value="2" selected>2</option>
+            <option value="3">3</option>
+            <option value="4">4</option>
+            <option value="5">5 (fast)</option>
+          </select>
+        </div>
+        <div>
+          <label>Image</label>
+          <div class="toggle-row">
+            <button id="flip-${camId}" onclick="toggleAttr('${camId}','flip')">Flip</button>
+            <button id="mirror-${camId}" onclick="toggleAttr('${camId}','mirror')">Mirror</button>
+          </div>
+        </div>
+      </div>
+    </div>
+    <div class="status" id="status-${camId}"></div>
+  </div>`;
+}
+
+document.getElementById('grid').innerHTML = Object.entries(CAMS).map(([id, label]) => buildPanel(id, label)).join('');
+
+async function ptz(cam, act, step) {
+  const stepMode = document.getElementById('step-' + cam).value;
+  const s = step !== undefined ? step : parseInt(stepMode);
+  const realStep = act === 'stop' ? 0 : (stepMode === '1' ? 1 : s);
+  try {
+    const r = await fetch(`/api/${cam}/ptz?act=${act}&step=${realStep}`);
+    const t = await r.text();
+    showStatus(cam, `${act} - ${t.trim()}`);
+  } catch(e) { showStatus(cam, 'Error: ' + e.message); }
+}
+
+async function setSpeed(cam) {
+  const spd = document.getElementById('speed-' + cam).value;
+  try {
+    const r = await fetch(`/api/${cam}/speed?pan=${spd}&tilt=${spd}`);
+    const t = await r.text();
+    showStatus(cam, `Speed set to ${spd}`);
+  } catch(e) { showStatus(cam, 'Error: ' + e.message); }
+}
+
+async function toggleAttr(cam, attr) {
+  const btn = document.getElementById(attr + '-' + cam);
+  const isActive = btn.classList.contains('active');
+  const val = isActive ? 'off' : 'on';
+  try {
+    const r = await fetch(`/api/${cam}/image?${attr}=${val}`);
+    const t = await r.text();
+    if (t.includes('ok')) {
+      btn.classList.toggle('active');
+      showStatus(cam, `${attr} ${val}`);
+    } else { showStatus(cam, t.trim()); }
+  } catch(e) { showStatus(cam, 'Error: ' + e.message); }
+}
+
+async function loadImageState(cam) {
+  try {
+    const r = await fetch(`/api/${cam}/imageattr`);
+    const t = await r.text();
+    const flip = t.match(/flip="(\w+)"/);
+    const mirror = t.match(/mirror="(\w+)"/);
+    if (flip && flip[1] === 'on') document.getElementById('flip-' + cam).classList.add('active');
+    if (mirror && mirror[1] === 'on') document.getElementById('mirror-' + cam).classList.add('active');
+    const speed = t.match(/panspeed="(\d+)"/);
+    if (speed) document.getElementById('speed-' + cam).value = speed[1];
+  } catch(e) {}
+}
+
+function showStatus(cam, msg) {
+  const el = document.getElementById('status-' + cam);
+  el.textContent = msg;
+  clearTimeout(el._t);
+  el._t = setTimeout(() => el.textContent = '', 3000);
+}
+
+Object.keys(CAMS).forEach(loadImageState);
+
+// Snapshot polling for live feeds
+function startFeed(camId) {
+  const img = document.getElementById('feed-' + camId);
+  let running = true;
+  async function poll() {
+    if (!running) return;
+    const next = new Image();
+    next.onload = () => { img.src = next.src; setTimeout(poll, 200); };
+    next.onerror = () => { setTimeout(poll, 1000); };
+    next.src = '/api/' + camId + '/frame?t=' + Date.now();
+  }
+  poll();
+}
+Object.keys(CAMS).forEach(startFeed);
+</script>
+</body>
+</html>"""
+
+
+class Handler(BaseHTTPRequestHandler):
+    def do_GET(self):
+        path = self.path.split("?")[0]
+        query = urllib.parse.parse_qs(urllib.parse.urlparse(self.path).query)
+
+        if path == "/":
+            self._respond(200, "text/html", HTML)
+            return
+
+        # /api/<cam>/stream -> proxy go2rtc MJPEG
+        parts = path.strip("/").split("/")
+        if len(parts) >= 3 and parts[0] == "api" and parts[1] in CAMERAS:
+            cam_id = parts[1]
+            cam = CAMERAS[cam_id]
+            action = parts[2]
+
+            if action == "stream":
+                self._proxy_stream(cam_id)
+                return
+            elif action == "frame":
+                self._proxy_frame(cam_id)
+                return
+            elif action == "ptz":
+                act = query.get("act", ["stop"])[0]
+                step = query.get("step", ["0"])[0]
+                resp = self._cam_cgi(cam, f"cmd=ptzctrl&-step={step}&-act={act}")
+                self._respond(200, "text/plain", resp)
+                return
+            elif action == "speed":
+                pan = query.get("pan", ["2"])[0]
+                tilt = query.get("tilt", ["2"])[0]
+                resp = self._cam_cgi(cam, f"cmd=setptzspeed&-panspeed={pan}&-tiltspeed={tilt}")
+                self._respond(200, "text/plain", resp)
+                return
+            elif action == "image":
+                params = "&".join(f"-{k}={v[0]}" for k, v in query.items())
+                resp = self._cam_cgi(cam, f"cmd=setimageattr&{params}")
+                self._respond(200, "text/plain", resp)
+                return
+            elif action == "imageattr":
+                resp = self._cam_cgi(cam, "cmd=getimageattr")
+                resp2 = self._cam_cgi(cam, "cmd=getptzspeed")
+                self._respond(200, "text/plain", resp + "\n" + resp2)
+                return
+
+        self._respond(404, "text/plain", "Not found")
+
+    def _cam_cgi(self, cam, params):
+        url = f"http://{cam['host']}:{cam['http_port']}/cgi-bin/hi3510/param.cgi?{params}"
+        try:
+            req = urllib.request.Request(url)
+            cred = f"{AUTH[0]}:{AUTH[1]}"
+            import base64
+            req.add_header("Authorization", "Basic " + base64.b64encode(cred.encode()).decode())
+            with urllib.request.urlopen(req, timeout=5) as resp:
+                return resp.read().decode()
+        except Exception as e:
+            return f"Error: {e}"
+
+    def _proxy_frame(self, cam_id):
+        url = f"http://{GO2RTC}/api/frame.jpeg?src=printer_{cam_id}"
+        try:
+            req = urllib.request.Request(url)
+            with urllib.request.urlopen(req, timeout=5) as resp:
+                data = resp.read()
+                self.send_response(200)
+                self.send_header("Content-Type", "image/jpeg")
+                self.send_header("Content-Length", str(len(data)))
+                self.send_header("Cache-Control", "no-cache, no-store")
+                self.end_headers()
+                self.wfile.write(data)
+        except Exception as e:
+            self._respond(502, "text/plain", f"Frame error: {e}")
+
+    def _proxy_stream(self, cam_id):
+        url = f"http://{GO2RTC}/api/stream.mjpeg?src=printer_{cam_id}"
+        try:
+            req = urllib.request.Request(url)
+            resp = urllib.request.urlopen(req, timeout=10)
+            content_type = resp.headers.get("Content-Type", "multipart/x-mixed-replace")
+            self.send_response(200)
+            self.send_header("Content-Type", content_type)
+            self.send_header("Cache-Control", "no-cache")
+            self.end_headers()
+            while True:
+                chunk = resp.read(8192)
+                if not chunk:
+                    break
+                self.wfile.write(chunk)
+        except (BrokenPipeError, ConnectionResetError):
+            pass
+        except Exception as e:
+            self._respond(502, "text/plain", f"Stream error: {e}")
+
+    def _respond(self, code, content_type, body):
+        data = body.encode() if isinstance(body, str) else body
+        self.send_response(code)
+        self.send_header("Content-Type", content_type)
+        self.send_header("Content-Length", str(len(data)))
+        self.end_headers()
+        self.wfile.write(data)
+
+    def log_message(self, fmt, *args):
+        pass  # suppress request logs
+
+
+class ThreadingHTTPServer(ThreadingMixIn, HTTPServer):
+    daemon_threads = True
+
+
+if __name__ == "__main__":
+    server = ThreadingHTTPServer(("0.0.0.0", PORT), Handler)
+    print(f"Camera Control Panel running on http://0.0.0.0:{PORT}")
+    server.serve_forever()