feat(all): Dynamic Map Renderer & Genie Cross-Reference for ElanthiaMap v2.0.0

[MahtraDR]

Dynamic Map Renderer & Genie Cross-Reference for ElanthiaMap v2.0.0

Summary

Adds a Cairo-based dynamic map renderer and Genie cross-database commands to ElanthiaMap v2.0.0 (PR #2207). This PR is designed to be merged on top of feat/map-v2.0.0.

• Dynamic Map Mode: Cairo-rendered zone maps that auto-layout rooms from map database connections, with no pre-drawn map images required. Toggled via right-click menu.
• Genie Cross-Reference: ;map genie and ;map g<zone>:<node> commands for looking up rooms by Genie client zone/node IDs (DR only, requires feat(all): Add Genie map cross-reference fields to the DragonRealms map data model lich-5#1169).

Changes

Base branch: feat/map-v2.0.0 (PR #2207)
Files changed: scripts/map.lic (+564 lines), spec/map/map_dynamic_spec.rb (new, 40 tests)

New Modules

Module	Lines	Purpose
ElanthiaMap::ZoneResolver	~65	Determines which rooms belong to the same "zone" using a 4-layer fallback: genie_zone -> @image -> @location -> BFS flood-fill. Results are cached.
ElanthiaMap::LayoutEngine	~155	Computes room positions for rendering. Mode A: uses Genie genie_pos coordinates directly. Mode B: BFS auto-layout using compass directions from wayto data. Includes post-processing collision resolution.

Window Modifications

Method	Type	Purpose
update_dynamic_display	public	Zone resolve -> layout compute/cache -> z-level update -> queue_draw
dynamic_map_enabled?	public	Returns @settings[:dynamic_map]
render_dynamic_map	private	4-pass Cairo renderer: connection lines, off-level rooms (dimmed), current-level rooms, current room (magenta)
find_dynamic_room_at	private	Hit detection for click handling in dynamic mode
toggle_dynamic_mode	private	Swaps visibility of static widgets (@map_image/@room_marker) vs @drawing_area
handle_dynamic_click	private	Click -> find room -> shift-click shows info, regular click runs go2
resize_drawing_area	private	Matches @drawing_area size to @scroller allocation
calculate_dynamic_scale	private	Returns global scale factor for dynamic mode

Settings & Menu

• dynamic_map setting added to load_settings, save_settings, reset_all_settings
• "Dynamic Map" CheckMenuItem added to context menu (after "Dynamic Indicator Size", with separator)

Genie Commands

• ;map genie — displays zone:node for the current room (DR only, returns early)
• ;map g<zone>:<node> — opens map centered on the room matching that Genie reference
• Help text updated with both commands
• determine_display_room updated to handle genie and g\w+:\w+ patterns

Other Changes

• create_map_display: adds @drawing_area (Gtk::DrawingArea) to layout, hidden by default
• show: properly toggles static/dynamic widget visibility after show_all
• handle_click: early return to handle_dynamic_click when dynamic mode is active
• destroy: cleans up @drawing_area before menu/window destroy (macOS Quartz fix)
• Main loop: branches on dynamic_map_enabled? for dynamic vs static rendering path
• Initial display: uses update_dynamic_display when dynamic mode is active

Architecture

ElanthiaMap (module)
├── MapData          (class)    — map metadata from room tags
├── MapCache         (class)    — image caching with dark mode
├── ZoneResolver     (module)   — NEW: zone detection with 4-layer fallback
├── LayoutEngine     (module)   — NEW: room position computation
└── Window           (class)    — main window
    ├── @drawing_area            — NEW: Gtk::DrawingArea for Cairo rendering
    ├── @layout_cache            — NEW: zone_id -> {positions, rooms}
    ├── @current_z_level         — NEW: current z-level for multi-floor zones
    ├── @dynamic_zone_data       — NEW: active zone data for rendering
    ├── render_dynamic_map()     — NEW: 4-pass Cairo renderer
    ├── update_dynamic_display() — NEW: room change handler for dynamic mode
    └── toggle_dynamic_mode()    — NEW: static <-> dynamic mode switch

Dependencies

• lich-5 PR Testing  #10 (MahtraDR/lich-5#10): Adds genie_id, genie_zone, genie_pos fields to map_dr.rb and json_extra_fields hook to map_base.rb. The Genie commands use Room.by_genie_ref which is defined there. Dynamic map rendering works without this PR but Genie-specific features (Mode A positioning, ;map genie, ;map g1:335) require it.
• PR feat(map.lic): v2.0.0 refactor #2207 (feat/map-v2.0.0): This PR is branched from and targets the ElanthiaMap v2.0.0 refactor.

Test Plan

• rspec spec/map/map_dynamic_spec.rb — 40 examples, 0 failures
• ruby -c scripts/map.lic — Syntax OK
• Launch ;map — static mode works unchanged
• Right-click -> "Dynamic Map" -> Cairo rendering with rooms + connections
• Room changes -> view follows in dynamic mode
• Click room in dynamic mode -> go2 navigation
• Shift-click room in dynamic mode -> shows room description
• Toggle back to static mode -> static rendering restored
• ;map genie -> shows Genie zone:node reference (DR only)
• ;map g1:335 -> opens map centered on that room
• macOS: window close without segfault
• Settings persist across restarts (dynamic_map on/off)
• ;map reset resets dynamic_map to false

[mrhoribu]

Changed to #2235 so that PR goes into PR branch instead of main branch.