feat: implement plugin architecture and application settings with Svelte UI

- Added plugin base and loader for backend extensibility
- Implemented application settings management with config persistence
- Created Svelte-based frontend with Dashboard and Settings pages
- Added API routes for plugins, tasks, and settings
- Updated documentation and specifications
- Improved project structure and developer tools

frontend/package-lock.json

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       "dev": true,
       "license": "MIT",
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       "dev": true,
       "license": "MIT",
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       "bin": {
         "acorn": "bin/acorn"
       },
@@ -1077,6 +1079,7 @@
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       ],
       "license": "MIT",
+      "peer": true,
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         "baseline-browser-mapping": "^2.9.0",
         "caniuse-lite": "^1.0.30001759",
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       "dev": true,
       "license": "MIT",
+      "peer": true,
       "bin": {
         "jiti": "bin/jiti.js"
       }
@@ -1721,6 +1725,7 @@
         }
       ],
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "nanoid": "^3.3.11",
         "picocolors": "^1.1.1",
@@ -2058,6 +2063,7 @@
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       "dev": true,
       "license": "MIT",
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       "dependencies": {
         "@jridgewell/remapping": "^2.3.4",
         "@jridgewell/sourcemap-codec": "^1.5.0",
@@ -2181,6 +2187,7 @@
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       "dev": true,
       "license": "MIT",
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       "engines": {
         "node": ">=12"
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@@ -2252,6 +2259,7 @@
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       "dev": true,
       "license": "MIT",
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       "engines": {
         "node": ">=12"
       },