FIX: Complete CodeMirror integration with native search, replace, and keyboard shortcuts

- Replace custom search/replace implementation with native CodeMirror extensions
- Add proper keyboard shortcut support: Ctrl+F, Ctrl+H, Ctrl+/, Ctrl+Space, etc.
- Fix browser shortcut conflicts by preventing defaults only when editor is focused
- Integrate autocompletion and comment toggle functionality
- Fix file name truncation in file manager grid to use text wrapping
- Add comprehensive keyboard shortcuts help panel for users
- Update i18n translations for editor buttons (Download, Replace, Replace All)
- Unify text and code file editing under single CodeMirror instance
- Add proper SSH HMAC algorithms for better compatibility

🤖 Generated with [Claude Code](https://claude.ai/code)

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

package-lock.json

@@ -8,6 +8,9 @@
       "name": "termix",
       "version": "1.6.0",
       "dependencies": {
+        "@codemirror/autocomplete": "^6.18.7",
+        "@codemirror/comment": "^0.19.1",
+        "@codemirror/search": "^6.5.11",
         "@hookform/resolvers": "^5.1.1",
         "@monaco-editor/react": "^4.7.0",
         "@radix-ui/react-accordion": "^1.2.11",
@@ -149,6 +152,40 @@
         "@lezer/common": "^1.1.0"
       }
     },
+    "node_modules/@codemirror/comment": {
+      "version": "0.19.1",
+      "resolved": "https://registry.npmjs.org/@codemirror/comment/-/comment-0.19.1.tgz",
+      "integrity": "sha512-uGKteBuVWAC6fW+Yt8u27DOnXMT/xV4Ekk2Z5mRsiADCZDqYvryrJd6PLL5+8t64BVyocwQwNfz1UswYS2CtFQ==",
+      "deprecated": "As of 0.20.0, this package has been merged into @codemirror/commands",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/state": "^0.19.9",
+        "@codemirror/text": "^0.19.0",
+        "@codemirror/view": "^0.19.0"
+      }
+    },
+    "node_modules/@codemirror/comment/node_modules/@codemirror/state": {
+      "version": "0.19.9",
+      "resolved": "https://registry.npmjs.org/@codemirror/state/-/state-0.19.9.tgz",
+      "integrity": "sha512-psOzDolKTZkx4CgUqhBQ8T8gBc0xN5z4gzed109aF6x7D7umpDRoimacI/O6d9UGuyl4eYuDCZmDFr2Rq7aGOw==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/text": "^0.19.0"
+      }
+    },
+    "node_modules/@codemirror/comment/node_modules/@codemirror/view": {
+      "version": "0.19.48",
+      "resolved": "https://registry.npmjs.org/@codemirror/view/-/view-0.19.48.tgz",
+      "integrity": "sha512-0eg7D2Nz4S8/caetCTz61rK0tkHI17V/d15Jy0kLOT8dTLGGNJUponDnW28h2B6bERmPlVHKh8MJIr5OCp1nGw==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/rangeset": "^0.19.5",
+        "@codemirror/state": "^0.19.3",
+        "@codemirror/text": "^0.19.0",
+        "style-mod": "^4.0.0",
+        "w3c-keyname": "^2.2.4"
+      }
+    },
     "node_modules/@codemirror/lang-angular": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/@codemirror/lang-angular/-/lang-angular-0.1.4.tgz",
@@ -477,6 +514,25 @@
         "crelt": "^1.0.5"
       }
     },
+    "node_modules/@codemirror/rangeset": {
+      "version": "0.19.9",
+      "resolved": "https://registry.npmjs.org/@codemirror/rangeset/-/rangeset-0.19.9.tgz",
+      "integrity": "sha512-V8YUuOvK+ew87Xem+71nKcqu1SXd5QROMRLMS/ljT5/3MCxtgrRie1Cvild0G/Z2f1fpWxzX78V0U4jjXBorBQ==",
+      "deprecated": "As of 0.20.0, this package has been merged into @codemirror/state",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/state": "^0.19.0"
+      }
+    },
+    "node_modules/@codemirror/rangeset/node_modules/@codemirror/state": {
+      "version": "0.19.9",
+      "resolved": "https://registry.npmjs.org/@codemirror/state/-/state-0.19.9.tgz",
+      "integrity": "sha512-psOzDolKTZkx4CgUqhBQ8T8gBc0xN5z4gzed109aF6x7D7umpDRoimacI/O6d9UGuyl4eYuDCZmDFr2Rq7aGOw==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/text": "^0.19.0"
+      }
+    },
     "node_modules/@codemirror/search": {
       "version": "6.5.11",
       "resolved": "https://registry.npmjs.org/@codemirror/search/-/search-6.5.11.tgz",
@@ -497,6 +553,13 @@
         "@marijn/find-cluster-break": "^1.0.0"
       }
     },
+    "node_modules/@codemirror/text": {
+      "version": "0.19.6",
+      "resolved": "https://registry.npmjs.org/@codemirror/text/-/text-0.19.6.tgz",
+      "integrity": "sha512-T9jnREMIygx+TPC1bOuepz18maGq/92q2a+n4qTqObKwvNMg+8cMTslb8yxeEDEq7S3kpgGWxgO1UWbQRij0dA==",
+      "deprecated": "As of 0.20.0, this package has been merged into @codemirror/state",
+      "license": "MIT"
+    },
     "node_modules/@codemirror/theme-one-dark": {
       "version": "6.1.3",
       "resolved": "https://registry.npmjs.org/@codemirror/theme-one-dark/-/theme-one-dark-6.1.3.tgz",