fix(16): resolve 3 UAT issues — update flow, batch cancel, text commands

- Fix update sub-workflow: remove unsupported GraphQL filter arg, fix node
  reference (Format Pull Error → Format Update Error), fix field case
  (data.image → data.Image)
- Fix batch cancel: connect Route Callback output 20 (batchcancel) to
  Prepare Batch UI Input (was empty connection array)
- Fix text commands: change .item.json to .first().json for paired item
  breakage after GraphQL chain expansion; convert Send Batch Confirmation
  from Telegram node to HTTP Request to fix double-serialized reply_markup

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

n8n-update.json

@@ -167,7 +167,7 @@
         },
         "sendBody": true,
         "specifyBody": "json",
-        "jsonBody": "={{ {\"query\": \"query { docker { containers(filter: { id: \\\"\" + $json.containerId + \"\\\" }) { id names state image imageId } } }\"} }}",
+        "jsonBody": "={\"query\": \"query { docker { containers { id names state image imageId } } }\"}",
         "options": {
           "timeout": 15000
         },
@@ -191,7 +191,7 @@
     },
     {
       "parameters": {
-        "jsCode": "// GraphQL Response Normalizer - Transform Unraid GraphQL to Docker API contract\n// Input: $input.item.json = raw GraphQL response\n// Output: Array of normalized containers\n\nconst response = $input.item.json;\n\n// Validation: Check for GraphQL errors\nif (response.errors && response.errors.length > 0) {\n  const messages = response.errors.map(e => e.message).join('; ');\n  throw new Error(`GraphQL error: ${messages}`);\n}\n\n// Validation: Check response structure\nif (!response.data?.docker?.containers) {\n  throw new Error('Invalid GraphQL response structure: missing data.docker.containers');\n}\n\n// State mapping: Unraid UPPERCASE -> Docker lowercase\nconst stateMap = {\n  'RUNNING': 'running',\n  'STOPPED': 'exited',  // Docker convention: stopped = exited\n  'PAUSED': 'paused'\n};\n\nfunction normalizeState(unraidState) {\n  return stateMap[unraidState] || unraidState.toLowerCase();\n}\n\n// Transform each container\nconst containers = response.data.docker.containers;\nconst normalized = containers.map(container => {\n  const dockerState = normalizeState(container.state);\n  \n  return {\n    // Core fields matching Docker API contract\n    Id: container.id,                    // Keep full PrefixedID (registry handles translation)\n    Names: container.names,               // Already has '/' prefix (Phase 14 verified)\n    State: dockerState,                   // Normalized lowercase state\n    Status: dockerState,                  // Docker has separate Status field\n    Image: '',                            // Not available in basic query\n    \n    // Debug field: preserve original Unraid ID\n    _unraidId: container.id\n  };\n});\n\n// Return as array of items (n8n multi-item output format)\nreturn normalized.map(container => ({ json: container }));\n"
+        "jsCode": "// GraphQL Response Normalizer - Find and normalize single container by ID\n// Input: $input.item.json = raw GraphQL response (all containers)\n// Uses: trigger data containerId to filter to the target container\n\nconst response = $input.item.json;\nconst triggerData = $('When executed by another workflow').item.json;\nconst targetId = triggerData.containerId;\n\n// Validation: Check for GraphQL errors\nif (response.errors && response.errors.length > 0) {\n  const messages = response.errors.map(e => e.message).join('; ');\n  throw new Error(`GraphQL error: ${messages}`);\n}\n\n// Validation: Check response structure\nif (!response.data?.docker?.containers) {\n  throw new Error('Invalid GraphQL response structure: missing data.docker.containers');\n}\n\n// State mapping: Unraid UPPERCASE -> Docker lowercase\nconst stateMap = {\n  'RUNNING': 'running',\n  'STOPPED': 'exited',\n  'PAUSED': 'paused'\n};\n\nfunction normalizeState(unraidState) {\n  return stateMap[unraidState] || unraidState.toLowerCase();\n}\n\n// Find the target container by ID\nconst allContainers = response.data.docker.containers;\nconst matched = allContainers.find(c => c.id === targetId);\n\nif (!matched) {\n  throw new Error(`Container with ID '${targetId}' not found among ${allContainers.length} containers`);\n}\n\nconst dockerState = normalizeState(matched.state);\nreturn [{\n  json: {\n    Id: matched.id,\n    Names: matched.names,\n    State: dockerState,\n    Status: dockerState,\n    Image: matched.image || '',\n    imageId: matched.imageId || '',\n    _unraidId: matched.id\n  }\n}];\n"
       },
       "id": "code-normalize-single",
       "name": "Normalize Single Container",
@@ -204,7 +204,7 @@
     },
     {
       "parameters": {
-        "jsCode": "// Capture pre-update state from input\nconst data = $input.item.json;\nconst triggerData = $('When executed by another workflow').item.json;\n\n// Check if we have container data already (from Resolve path) or need to extract (from direct ID path)\nlet unraidId, containerName, currentImageId, currentImage;\n\nif (data.unraidId) {\n  // From Resolve Container ID path\n  unraidId = data.unraidId;\n  containerName = data.containerName;\n  currentImageId = data.currentImageId;\n  currentImage = data.currentImage;\n} else if (data.Id) {\n  // From Query Single Container path (normalized)\n  unraidId = data.Id;\n  containerName = (data.Names?.[0] || '').replace(/^\\//,  '');\n  currentImageId = data.imageId || '';\n  currentImage = data.image || '';\n} else {\n  throw new Error('No container data found');\n}\n\nreturn {\n  json: {\n    unraidId,\n    containerName,\n    currentImageId,\n    currentImage,\n    chatId: triggerData.chatId,\n    messageId: triggerData.messageId,\n    responseMode: triggerData.responseMode,\n    correlationId: triggerData.correlationId || ''\n  }\n};\n"
+        "jsCode": "// Capture pre-update state from input\nconst data = $input.item.json;\nconst triggerData = $('When executed by another workflow').item.json;\n\n// Check if we have container data already (from Resolve path) or need to extract (from direct ID path)\nlet unraidId, containerName, currentImageId, currentImage;\n\nif (data.unraidId) {\n  // From Resolve Container ID path\n  unraidId = data.unraidId;\n  containerName = data.containerName;\n  currentImageId = data.currentImageId;\n  currentImage = data.currentImage;\n} else if (data.Id) {\n  // From Query Single Container path (normalized)\n  unraidId = data.Id;\n  containerName = (data.Names?.[0] || '').replace(/^\\//,  '');\n  currentImageId = data.imageId || '';\n  currentImage = data.Image || '';\n} else {\n  throw new Error('No container data found');\n}\n\nreturn {\n  json: {\n    unraidId,\n    containerName,\n    currentImageId,\n    currentImage,\n    chatId: triggerData.chatId,\n    messageId: triggerData.messageId,\n    responseMode: triggerData.responseMode,\n    correlationId: triggerData.correlationId || ''\n  }\n};\n"
       },
       "id": "code-capture-state",
       "name": "Capture Pre-Update State",
@@ -734,7 +734,7 @@
     },
     {
       "parameters": {
-        "jsCode": "// Return error result\nconst data = $('Format Pull Error').item.json;\nreturn {\n  json: {\n    success: false,\n    updated: false,\n    message: data.message\n  }\n};"
+        "jsCode": "// Return error result\nconst data = $('Format Update Error').item.json;\nreturn {\n  json: {\n    success: false,\n    updated: false,\n    message: data.message\n  }\n};"
       },
       "id": "code-return-error",
       "name": "Return Error",