you 3094b96e07 feat: Packet Filter Language M1 — Wireshark-style filter engine + UI ...

Add a filter language for the packets page. Users can type expressions like:
  type == Advert && snr > 5
  payload.name contains "Gilroy"
  hops > 2 || route == FLOOD

Architecture: Lexer → Parser → AST → Evaluator(packet) → boolean

- packet-filter.js: standalone IIFE exposing window.PacketFilter
  - Supports: ==, !=, >, <, >=, <=, contains, starts_with, ends_with
  - Logic: &&, ||, !, parentheses
  - Fields: type, route, hash, snr, rssi, hops, observer, size, payload.*
  - Case-insensitive string comparisons, null-safe
  - Self-tests included (node packet-filter.js)
- packets.js: filter input with 300ms debounce, error display, match count
- style.css: filter input states (focus, error, active)
- index.html: script tag added before packets.js

2026-03-23 22:48:59 +00:00

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