feat(axum-discordsh): clickable links, gear expansion, JSON API + session viewer

[h0lybyte]

Summary

• Clickable profile links: Move player roster from embed footer (plain text) to embed field where [text](url) markdown links are clickable
• Gear expansion: Add 7 new gear items including Legendary tier (Excalibur, Void Scythe, Dragon Scale) and new DamageReduction gear special
• JSON API: Add /api/session/{id} endpoint returning full session state as JSON with Cache-Control: no-cache
• Session viewer: Add /session/{id} page via Askama template with game/map/inventory card images, OG metadata for social sharing, and inline JS that fetches session JSON
• Serde serialization: Add serde::Serialize to all game types with custom serializers for HashMap<UserId, _> and HashMap<MapPos, _>

New Gear Items

Name	Slot	Rarity	Special
Iron Mace	Weapon	Uncommon	—
Glass Stiletto	Weapon	Rare	+15% Crit
Excalibur	Weapon	Legendary	+10% Crit
Void Scythe	Weapon	Legendary	15% Lifesteal
Shadow Cloak	Armor	Uncommon	—
Runeguard Plate	Armor	Rare	2 Thorns
Dragon Scale	Armor	Legendary	10% DmgReduction

Files Changed

• Cargo.toml — enable serde feature on uuid
• types.rs — serde::Serialize on all types, DamageReduction variant, custom serializers
• content.rs — 7 new gear items, updated loot tables (skeleton, wraith, boss)
• logic.rs — DamageReduction in single-target + AoE enemy damage calc
• card.rs — DamageReduction match arm in gear display
• render.rs — roster in embed field with clickable links, simplified footer
• askama.rs — SessionViewerTemplate struct
• transport/api.rs — new JSON + page endpoints with tests
• transport/mod.rs — pub mod api;
• transport/https.rs — merge API router
• templates/askama/session.html — new session viewer HTML template

Test plan

• cargo build -p axum-discordsh compiles
• cargo test -p axum-discordsh — 372 tests pass
• Manual: dungeon embed shows clickable profile links
• Manual: curl /api/session/{sid} returns valid JSON
• Manual: /session/{sid} renders viewer page with cards
• Manual: boss drops Legendary gear
• Manual: Dragon Scale reduces enemy damage by 10%

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Scanned Files

None