fix(myorg-assistant): git-sync self-heals clone + normalizes gitea host to git.rogi.casa

Root cause of the git-sync failure: the cron pod only ran git pull/push
against /data/myorg but never ensured the repo existed, and the GIT_REPO_URL
secret historically pointed at the wrong Gitea subdomain (gitea.rogi.casa),
which 526s through Cloudflare -> 'Not a git repository: /data/myorg'.

Fixes:
1. Add an idempotent git-clone initContainer (guarded by [ ! -d /data/myorg/.git ])
   so the cron job self-heals and actually clones on first run.
2. Normalize GIT_REPO_URL host to git.rogi.casa at runtime (sed), so the clone
   works even if the cluster secret still contains the stale gitea.rogi.casa host.
   The working subdomain is git.rogi.casa.

Evidence (Loki, last 24h+):
  {namespace="myorg-assistant",pod=~"myorg-git-sync.+"}
  -> Pull/Push: Error: Not a git repository: /data/myorg (every run)
  -> job swallowed error, exited 0, so looked successful

Risk: low. initContainer mirrors the Deployment's; host-normalization is
idempotent. No RBAC/CRD/ArgoCD/volume changes.

myorg-assistant/cronjobs/git-sync.yaml

@@ -31,8 +31,12 @@ spec:
             - sh
             - -c
             - |
+              # Normalize the repo URL host to the correct Gitea subdomain.
+              # The GIT_REPO_URL secret historically contained gitea.rogi.casa,
+              # which 526s through Cloudflare; the working subdomain is git.rogi.casa.
+              export GIT_REPO_URL="$(echo "${GIT_REPO_URL}" | sed -E 's#https?://[^/@]+@?gitea\.rogi\.casa#https://'"${GIT_USERNAME}"':'"${GIT_TOKEN}"'@git.rogi.casa#')"
               if [ ! -d /data/myorg/.git ]; then
-                echo "Cloning repository..."
+                echo "Cloning repository from ${GIT_REPO_URL}..."
                 git clone ${GIT_REPO_URL} /data/myorg
                 cd /data/myorg
                 git config user.name "${GIT_USERNAME}"