v0.7.5 — Portrait clothing & event pipeline fixes

Portrait System

Clothing layers

• Renders worn clothing (shirts, dresses, tunics, vests, coats, cloaks, helms, hoods, etc.) from DF's sprite sheets
• Dye color detection via dye_profile.color_index on item improvements
• HSV-based tinting for naturally muted portrait-aesthetic colors
• Material flag matching (leather, metal, artifact) for correct tile selection
• Item quality tier support (ordinary through masterwork)

Accuracy improvements

• Fix male tissue layout: head hair at indices [6,7], not [3] (which is moustache)
• Fix eyebrow density: HEAD layer 4,5 (eyebrow), not 0,1 (sideburns)
• Fix PONY_TAILS vs PONY_TAIL naming mismatch
• Capture nose broadness, hair curliness from bp_modifiers
• Use head hair color for beard/eyebrow (DF Premium doesn't randomize these)

Event System

Autosave resilience

• Event monitor survives autosave folder renames (waa -> autosave 1 -> autosave 2) seamlessly
• Web UI auto-switches to the newest folder for the active fortress

Noise reduction

• Remove false tantrum detection (stress category 6 is not an actual tantrum)
• Filter mundane building events (furniture), keep workshops/furnaces
• Group caravan arrivals by civilization (one event instead of per-merchant)
• Pre-seed migrant relationships to suppress false "bond formed" events on arrival
• Filter individual migrant_arrived events (migration_wave summary is displayed)

Event ordering

• Events sorted chronologically after loading from multiple save folders
• Events page and combat log use all events instead of recent_events(200)