Landing: telemetry collector, doomguard watermark, SIGNAL centering

- telemetry.sh: bash collector for static device + OBS profile specs.
  Default mode wraps telemetry.json → telemetry.js (script-tag-loaded
  global, dodging file:// fetch CORS in CEF). --collect re-reads
  hardware + OBS basic.ini / streamEncoder.json.
- index.html: footer subtitle now rotates real CPU/MEM/GPU/OBS data
  with soft 400ms crossfade; SIGNAL group re-centered via 3-col grid;
  doomguard watermark behind everything with periodic "tune-in"
  spikes through the noise canvas.
- telemetry.json: hand-edited cosmetic version of collected specs.
- .gitignore: track telemetry.json (source), ignore telemetry.js
  (build artifact) and *.manual backups.

landing/telemetry.json

@@ -0,0 +1,41 @@
+{
+  "collectedAt": "2026-04-25T22:10:52Z",
+  "cpu": {
+    "model":   "AMD Ryzen",
+    "threads": 12
+  },
+  "mem": {
+    "totalGB": 32
+  },
+  "host": {
+    "kernel": "Arch Linux 6.18.23-1-lts"
+  },
+  "gpu": {
+    "name":        "NVIDIA GeForce RTX 3060 Ti",
+    "vramTotalMB": 8192
+  },
+  "obs": {
+    "profile":    "Untitled",
+    "renderer":   "OpenGL",
+    "outputMode": "Advanced",
+    "canvas":     { "w": 2560, "h": 1336 },
+    "output":     { "w": 1920,  "h": 1080  },
+    "fps":        30,
+    "color": {
+      "format": "NV12",
+      "space":  "709",
+      "range":  "Partial"
+    },
+    "stream": {
+      "encoder":     "x264",
+      "rateControl": "CBR",
+      "bitrateKbps": null,
+      "keyintSec":   2,
+      "profile":     "high"
+    },
+    "audio": {
+      "sampleRateHz": 48000,
+      "channels":     "Stereo"
+    }
+  }
+}