feat(frontend): add NexusAI React app (no secrets, no builds)

.gitignore

@@ -1,5 +1,8 @@
 # ---- OS / Editors ----
 .DS_Store
+._*
+.Spotlight-V100
+.Trashes
 .idea/
 .vscode/
 *.swp
@@ -16,26 +19,29 @@ build/
 .eggs/
 .wheelhouse/
 .coverage
+coverage.xml
 htmlcov/
 .tox/
 .pytest_cache/
 .mypy_cache/
+.ruff_cache/
 .cache/
 
-# ---- Node / Frontend (if UI present) ----
+# ---- Node / Frontend ----
 node_modules/
-pnpm-lock.yaml
-yarn.lock
 npm-debug.log*
 .vite/
 dist/
 coverage/
 *.map
 
 # ---- Env / Secrets ----
-.env
-.env.*
+**/.env
+**/.env.*
 !.env.example
+.envrc
+.npmrc
+.pypirc
 *.key
 *.crt
 *.pem
@@ -58,3 +64,14 @@ crash.log
 *.sqlite3
 data/
 documents/
+
+# Frontend
+frontend/node_modules
+frontend/dist
+frontend/.env
+frontend/.DS_Store
+
+# Backend
+backend/.venv
+backend/__pycache__/
+backend/.env

.pre-commit-config.yaml

@@ -0,0 +1,6 @@
+repos:
+- repo: https://github.com/Yelp/detect-secrets
+  rev: v1.5.0
+  hooks:
+    - id: detect-secrets
+      args: ["--baseline", ".secrets.baseline"]

.secrets.baseline

@@ -0,0 +1,146 @@
+{
+  "version": "1.5.0",
+  "plugins_used": [
+    {
+      "name": "ArtifactoryDetector"
+    },
+    {
+      "name": "AWSKeyDetector"
+    },
+    {
+      "name": "AzureStorageKeyDetector"
+    },
+    {
+      "name": "Base64HighEntropyString",
+      "limit": 4.5
+    },
+    {
+      "name": "BasicAuthDetector"
+    },
+    {
+      "name": "CloudantDetector"
+    },
+    {
+      "name": "DiscordBotTokenDetector"
+    },
+    {
+      "name": "GitHubTokenDetector"
+    },
+    {
+      "name": "GitLabTokenDetector"
+    },
+    {
+      "name": "HexHighEntropyString",
+      "limit": 3.0
+    },
+    {
+      "name": "IbmCloudIamDetector"
+    },
+    {
+      "name": "IbmCosHmacDetector"
+    },
+    {
+      "name": "IPPublicDetector"
+    },
+    {
+      "name": "JwtTokenDetector"
+    },
+    {
+      "name": "KeywordDetector",
+      "keyword_exclude": ""
+    },
+    {
+      "name": "MailchimpDetector"
+    },
+    {
+      "name": "NpmDetector"
+    },
+    {
+      "name": "OpenAIDetector"
+    },
+    {
+      "name": "PrivateKeyDetector"
+    },
+    {
+      "name": "PypiTokenDetector"
+    },
+    {
+      "name": "SendGridDetector"
+    },
+    {
+      "name": "SlackDetector"
+    },
+    {
+      "name": "SoftlayerDetector"
+    },
+    {
+      "name": "SquareOAuthDetector"
+    },
+    {
+      "name": "StripeDetector"
+    },
+    {
+      "name": "TelegramBotTokenDetector"
+    },
+    {
+      "name": "TwilioKeyDetector"
+    }
+  ],
+  "filters_used": [
+    {
+      "path": "detect_secrets.filters.allowlist.is_line_allowlisted"
+    },
+    {
+      "path": "detect_secrets.filters.common.is_ignored_due_to_verification_policies",
+      "min_level": 2
+    },
+    {
+      "path": "detect_secrets.filters.heuristic.is_indirect_reference"
+    },
+    {
+      "path": "detect_secrets.filters.heuristic.is_likely_id_string"
+    },
+    {
+      "path": "detect_secrets.filters.heuristic.is_lock_file"
+    },
+    {
+      "path": "detect_secrets.filters.heuristic.is_not_alphanumeric_string"
+    },
+    {
+      "path": "detect_secrets.filters.heuristic.is_potential_uuid"
+    },
+    {
+      "path": "detect_secrets.filters.heuristic.is_prefixed_with_dollar_sign"
+    },
+    {
+      "path": "detect_secrets.filters.heuristic.is_sequential_string"
+    },
+    {
+      "path": "detect_secrets.filters.heuristic.is_swagger_file"
+    },
+    {
+      "path": "detect_secrets.filters.heuristic.is_templated_secret"
+    }
+  ],
+  "results": {
+    "frontend/AWS_DEPLOYMENT_GUIDE.md": [
+      {
+        "type": "AWS Access Key",
+        "filename": "frontend/AWS_DEPLOYMENT_GUIDE.md",
+        "hashed_secret": "a9c45238941ad6df08ccd2d0ed0e20c8ea34154b",
+        "is_verified": false,
+        "line_number": 113
+      }
+    ],
+    "frontend/ec2-credentials.txt": [
+      {
+        "type": "Secret Keyword",
+        "filename": "frontend/ec2-credentials.txt",
+        "hashed_secret": "34f5d1338a932cb8f0b03d00db4fe8719ea65739",
+        "is_verified": false,
+        "line_number": 5
+      }
+    ]
+  },
+  "generated_at": "2025-08-23T03:16:18Z"
+}

frontend/backend/.env.example

@@ -0,0 +1,9 @@
+# OpenAI Configuration
+OPENAI_API_KEY=your_openai_api_key_here
+OPENAI_MODEL=gpt-4o-mini
+OPENAI_MAX_TOKENS=1000
+OPENAI_TEMPERATURE=0.7
+
+# Application Configuration
+DEBUG=True
+ENVIRONMENT=development