chore: Organize workspace structure - move docs, workflows, scripts to subdirectories

Organization:
- Created docs/ with setup/, guides/, history/ subdirectories
- Created workflows/ with trading/, analytics/, telegram/, archive/ subdirectories
- Created scripts/ with docker/, setup/, testing/ subdirectories
- Created tests/ for TypeScript test files
- Created archive/ for unused reference files

Moved files:
- 17 documentation files → docs/
- 16 workflow JSON files → workflows/
- 10 shell scripts → scripts/
- 4 test files → tests/
- 5 unused files → archive/

Updated:
- README.md with new file structure and documentation paths

Deleted:
- data/ (empty directory)
- screenshots/ (empty directory)

Critical files remain in root:
- telegram_command_bot.py (active bot - used by Dockerfile)
- watch-restart.sh (systemd service dependency)
- All Dockerfiles and docker-compose files
- All environment files

Validation:
 Containers running (trading-bot-v4, telegram-trade-bot, postgres)
 API responding (positions endpoint tested)
 Telegram bot functional (/status command tested)
 All critical files present in root

No code changes - purely organizational.
System continues running without interruption.

Recovery: git revert HEAD or git reset --hard cleanup-before

workflows/archive/n8n-trader-workflow.json

@@ -0,0 +1,100 @@
+{
+  "name": "Trader",
+  "nodes": [
+    {
+      "parameters": {
+        "httpMethod": "POST",
+        "path": "3371ad7c-0866-4161-90a4-f251de4aceb8",
+        "options": {}
+      },
+      "id": "683db7ad-2df6-44c7-afaa-d2f40705f268",
+      "name": "Webhook",
+      "type": "n8n-nodes-base.webhook",
+      "typeVersion": 1,
+      "position": [
+        500,
+        460
+      ],
+      "webhookId": "3371ad7c-0866-4161-90a4-f251de4aceb8"
+    },
+    {
+      "parameters": {
+        "chatId": "579304651",
+        "text": "={{ $json.signal.startsWith(\"Buy\") ? \"🟢 \" + $json.signal : \"🔴 \" + $json.signal }}\n",
+        "additionalFields": {
+          "appendAttribution": false
+        }
+      },
+      "id": "e9caf28b-5731-46ba-bb31-b152fde4bae5",
+      "name": "Telegram",
+      "type": "n8n-nodes-base.telegram",
+      "typeVersion": 1.1,
+      "position": [
+        1300,
+        460
+      ],
+      "credentials": {
+        "telegramApi": {
+          "id": "Csk5cg4HtaSqP5jJ",
+          "name": "Telegram account"
+        }
+      }
+    },
+    {
+      "parameters": {
+        "fields": {
+          "values": [
+            {
+              "name": "signal",
+              "stringValue": "={{ $json.body.split('|')[0].trim() }}"
+            }
+          ]
+        },
+        "options": {}
+      },
+      "id": "1844fbcb-282b-4b01-9744-b21adda235e9",
+      "name": "Edit Fields",
+      "type": "n8n-nodes-base.set",
+      "typeVersion": 3.2,
+      "position": [
+        860,
+        460
+      ]
+    }
+  ],
+  "pinData": {},
+  "connections": {
+    "Webhook": {
+      "main": [
+        [
+          {
+            "node": "Edit Fields",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    },
+    "Edit Fields": {
+      "main": [
+        [
+          {
+            "node": "Telegram",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    }
+  },
+  "active": true,
+  "settings": {
+    "executionOrder": "v1"
+  },
+  "versionId": "b35ed14e-bd11-4601-a304-6263832f11b4",
+  "id": "Bg1iplLiwLdVexG1",
+  "meta": {
+    "instanceId": "e766d4f0b5def8ee8cb8561cd9d2b9ba7733e1907990b6987bca40175f82c379"
+  },
+  "tags": []
+}