feat: grouped firewall rules view

[Jamkris]

Summary

Large rulesets (1000+ rules) were one flat table. This groups rules by table → chain in collapsible sections.

• bastion/fwview.py group_rules_by_table() — pure grouping (sorted by family/table; chains in ruleset order), fully tested.
• Firewall rules render as <details> per table (auto-open when ≤3 tables), each with per-chain subsections and readable expressions.
• A filter that hides non-matching rows and auto-opens/collapses the groups with matches.

Test plan

• python -m pytest -q → 169 passed. New: tests/test_fwview.py + a grouped-render web test.

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Summary by cubic

Groups firewall rules by table and chain into collapsible sections, with a smart filter that auto-expands matches and restores default collapse when cleared. Adds visible row separators to make large rulesets easier to scan.

• New Features

  • Added group_rules_by_table() in bastion/fwview.py (sorted by family/table; preserves chain order).
  • Firewall view renders one
    Details

    per table with per-chain subsections; auto-opens when ≤3. Filter hides non-matching rows and auto-opens matches.

• Bug Fixes

  • Clearing the filter restores each table’s default open/closed state.
  • Added visible row separators in grouped tables for readability.

^{Written for commit 31f5c67. Summary will update on new commits.}

[cubic-dev-ai]

All reported issues were addressed across 7 files

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