feat(cloudflared): manage tunnel ingress locally via ConfigMap

The tunnel was remotely managed from the Zero Trust dashboard: the
Deployment ran 'run --token' and ignored the ConfigMap that already
existed in the tree. Switch to a locally-managed tunnel so the ingress
routing table lives in git.

- deployment: mount cloudflared-config (config.yml) and the
  cloudflared-credentials Secret; drop TUNNEL_TOKEN env
- configmap.yaml: per-hostname ingress rules to ingress-nginx via the
  CoreDNS rewrite, plus a 404 catch-all
- secret-generator: register the SOPS-encrypted credentials file
- homelab-ca: add the cloudflared namespace copy so the connector trusts
  the ingress certificate (force-ssl-redirect makes plaintext impossible)

Credentials were extracted from the live cloudflared-token Secret and
re-encrypted with SOPS; no plaintext secret is committed.

k8s/bootstrap/cert-manager/homelab-ca-configmap.yaml

@@ -271,3 +271,40 @@ data:
     NDKi7/Gxha790QN3TD/U7p9GcEtfXKv8KISKfxnfD9o9Yx6pWOXcgvGefQkpXuRm
     kGzDM+aY/VKs5Et5/RyKavBDihuOcumLsmoRg/bFoB/xpeURTyiehUdu
     -----END CERTIFICATE-----
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: homelab-ca
+  namespace: cloudflared
+data:
+  ca.crt: |
+    -----BEGIN CERTIFICATE-----
+    MIIFBjCCAu6gAwIBAgIJAKoBPdKPDL5AMA0GCSqGSIb3DQEBCwUAMDAxEzARBgNV
+    BAMMCmhvbWVsYWItY2ExGTAXBgNVBAoMEHJpb3RwaWFvLmhvbWVsYWIwHhcNMjYw
+    ODEyMjA1NDQzWhcNMzYwODA5MjA1NDQzWjAwMRMwEQYDVQQDDApob21lbGFiLWNh
+    MRkwFwYDVQQKDBByaW90cGlhby5ob21lbGFiMIICIjANBgkqhkiG9w0BAQEFAAOC
+    Ag8AMIICCgKCAgEAzw796vZRFOBc/orUu9J6rv91A3SNLJsqz/VuetwAXCaVSlK5
+    kL/RaBKKkcXToCC5avwix6W21FnwLUW4R8QlQdin8+XEHpx2LY5R4GmSvaCbU7wm
+    YwYgVGQVv8KlgcMbz/pF09vXU29cHUHwlkN+BWVGAxVGWxam94j1pBzV0dOhhRw2
+    q5sZYUUrPO5l775od2FMMnMzoRFugxDvJof0p3fAChNAIiFhP95lrcb2YsTwK+a2
+    6mk3AZc0gMtmgVsH+zryGFcAmWLixq41ye/H23ktj2bjEHCr9mIDpuSOKLyLBzrg
+    js/HqdxvwkZkkxwXft0Vi7GN0/LGHMdPrDE499pJelAHbxUpBoOk8sfXSNnfESI8
+    v20LybATGrKXFlOhMKshY1a3JLAoZTaW0xkG4PM4HT7lK/ovr/NLF6kdP7HxJFFQ
+    +4WjySiwbjusNobpTaQWVwCjD3Imf+2feAqJeX3z+P3EhxfrmvEojLOdUiiPcjMn
+    CFl9u2EpSlax53umSkcBQJGfFKM17fZzhtakjqhCTzAfXXlxZy4hsHDtfzRcfaoB
+    Zz/PiJ0TtJSC7TvxZZoPpGexQdoeT7kJEksTvGi5OSfJD7HaKe5RQSZGgpz7ATB+
+    YMBKbjhMXVu+TAdcO1qZRN0UCncrliN61ki9F0tE8kNgpS9biZ6kheoJMZUCAwEA
+    AaMjMCEwDwYDVR0TAQH/BAUwAwEB/zAOBgNVHQ8BAf8EBAMCAYYwDQYJKoZIhvcN
+    AQELBQADggIBAFN1At11d/+Ue6cEjCklnRQpLuD5agXaE+pi5oHNfnggSlO8UjUj
+    lDzfnmxi3IAI6HruzDARM9J95qJboUxWOAEmK9SNnZNS/1b0GyikP3YcF1gIFqtW
+    6SgmVfC1cVUFKGt/+QQzZxhOLuoydv9Ozu12nxsTW/WY2t+cpeL+1wrsM22RA6W/
+    xV/bzYbwzCUT9v4tMZLZHk5CkXztVFXSJyW/8w9rVZdUGZM+mwwn81PLSE0v3s/2
+    wJH8eUqGl73i3Xgn7CVanN4cJYMGYVVlRD6Qr6muBN4Vh0ETY1PrjzsZ6XsV6vk9
+    glMbQnErYMZHZIDtnVdaBt60MecUD9O4eLeip0SE6bVRAucKBXA9xNMilMQEL8/X
+    FBMAxXl10rowBlbX2oaFSOM80eLTla4a3gSL7+0vua3C4Dtv2bLo8ZjCyqXwOJeb
+    N85cqcVZStz3qlgQN1nG2qGE3BS6scOs7+mUGe9CmS8acJV++PKm8CtmLH6/ibjV
+    tAc/6+Vg/keo0kty7H7L6oQd+gKpuaJ2I+wKYe4l9UwHi9zEb8YjzGB4n2AtsoWI
+    NDKi7/Gxha790QN3TD/U7p9GcEtfXKv8KISKfxnfD9o9Yx6pWOXcgvGefQkpXuRm
+    kGzDM+aY/VKs5Et5/RyKavBDihuOcumLsmoRg/bFoB/xpeURTyiehUdu
+    -----END CERTIFICATE-----