fix(fleet): bound generic table materialization

[gnanirahulnutakki]

Summary

• paginate generic Kubernetes server Tables with opaque continuation tokens and bounded row/page budgets
• cap Table decoding at 4 MiB per page and 16 MiB total, reject ignored limits/cycles, and sanitize non-success bodies at the reviewed kubeconfig HTTP boundary
• retain display columns only for selected facts and prove second-page behavior against two real kind clusters

Verification

• make ci
• make e2e-isolation (digest-pinned PostgreSQL RLS + two 50,000-execution fuzzers)
• make e2e-kind KIND=/Volumes/EXTENDED/MacData/tools/bin/kind (215.467s after rebase)
• make release-check GORELEASER=/Volumes/EXTENDED/MacData/tools/bin/goreleaser
• secret-pattern preflight
• CodeRabbit committed-tree review: zero findings
• signed commit, DCO, and GSTACK checkpoint verified

Closes #190

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✨ Finishing Touches

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