feat: add phase 1 fastapi backend and frontend

Co-authored-by: aider (openrouter/thinkingmachines/inkling-small:free) <aider@aider.chat>

backend/main.py

@@ -0,0 +1,52 @@
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+import subprocess
+
+app = FastAPI()
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+@app.get("/")
+def root():
+    return {"message": "Kubectl Web GUI backend"}
+
+@app.get("/contexts")
+def get_contexts():
+    result = subprocess.run(
+        ["kubectl", "config", "get-contexts", "-o", "name"],
+        capture_output=True, text=True
+    )
+    contexts = [line for line in result.stdout.splitlines() if line]
+    current = ""
+    try:
+        cur = subprocess.run(
+            ["kubectl", "config", "current-context"],
+            capture_output=True, text=True
+        )
+        current = cur.stdout.strip()
+    except Exception:
+        pass
+    return {"current": current, "contexts": contexts}
+
+@app.get("/namespaces")
+def get_namespaces():
+    result = subprocess.run(
+        ["kubectl", "get", "namespaces", "-o", "jsonpath={range .items[*]}{.metadata.name}{\"\\n\"}{end}"],
+        capture_output=True, text=True
+    )
+    namespaces = [line for line in result.stdout.splitlines() if line]
+    return {"namespaces": namespaces}
+
+@app.get("/pods")
+def get_pods(namespace: str = "default"):
+    result = subprocess.run(
+        ["kubectl", "get", "pods", "-n", namespace, "-o", "json"],
+        capture_output=True, text=True
+    )
+    return {"raw": result.stdout, "namespace": namespace}

backend/requirements.txt

@@ -0,0 +1,3 @@
+fastapi
+uvicorn[standard]
+python-multipart