Changelog

All notable changes to this project are documented here. Format loosely follows Keep a Changelog.

[Unreleased]

Web UI now identifies itself as "Titrate" (page title, nav-bar brand, heading) instead of the internal "Firewall Tutor" working name.
archive/original/ and the root data/, output/, docs/, and screenshots/ folders (all original-WinForms artifacts) moved out of this repository into a personal academic-archive repo; README updated with a TODO pointer until that repo is published.
Removed PROJECT_NOTES.md.

Rebuilt the project as an interactive ACL execution visualizer, replacing the WinForms tabbed app (preserved unmodified under archive/original/).
FirewallTutor.Core: multi-field (protocol/source/source port/ destination/destination port) rule model, a real bounded-subset Cisco extended ACL parser (fails closed on unsupported syntax), and FirewallEvaluator.Evaluate producing a full EvaluationTrace -- every rule considered, every field checked, with a plain-English explanation for each pass/fail.
Bit-level wildcard breakdown, including genuinely discontiguous masks (safe here since evaluation only ever tests one concrete packet, unlike fwlint's whole-policy exact-set-algebra requirements).
FirewallTutor.Web: Blazor WebAssembly UI (client-only, no backend) with rule presets, a packet builder, predict-then-reveal, and forward/ backward/jump step-through navigation over the immutable trace.
FirewallTutor.Cli: Spectre.Console terminal step-through using the identical FirewallEvaluator, so the CLI and web UI can never disagree.
33 xUnit tests covering address/port/protocol matching, first-match-wins evaluation semantics (including the classic broad-before-specific vs. specific-before-broad ordering lesson), and the parser's happy and fail-closed paths.
Two example ACLs (examples/ordering-demo.acl and ordering-demo-reordered.acl) demonstrating, with real captured CLI output, that reordering the same two rules flips the decision for the same packet.

README.md rewritten to document the new tool while preserving the original course info and problem statement.