feat: add player hover stats panel

ai/tasks/done/TASK-143-player-table-hover-stats-panel.md

@@ -0,0 +1,80 @@
+---
+id: TASK-143
+title: Player table hover stats panel
+status: done
+type: frontend
+team: Frontend Senior
+supporting_teams: [Experto en interfaz]
+roadmap_item: foundation
+priority: high
+---
+
+# TASK-143 - Player table hover stats panel
+
+## Goal
+
+Make the internal historical match detail player table more compact by moving expanded per-player statistics into an accessible hover/focus/click details panel.
+
+## Context
+
+The detail page player table currently includes detailed columns for weapons, most killed and death by. The desired scoreboard-like UX keeps the table focused on player/team/core combat metrics and reveals expanded statistics per row.
+
+## Steps
+
+1. Inspect the current match detail renderer and scoreboard detail CSS.
+2. Reduce the visible table columns to Jugador, Equipo, K, D, TK, K/D and KPM.
+3. Add accessible row hover/focus/click expanded panels with weapons, most killed, death by and direct matchups.
+4. Preserve team styling, scoreboard link behavior and forbidden hidden sections.
+5. Validate syntax, frontend build/container and rendered behavior.
+
+## Files to Read First
+
+- `ai/architecture-index.md`
+- `ai/repo-context.md`
+- `ai/orchestrator/frontend-senior.md`
+- `frontend/historico-partida.html`
+- `frontend/assets/js/historico-partida.js`
+- `frontend/assets/css/historico-scoreboard-detail.css`
+- `frontend/assets/css/historico.css`
+
+## Expected Files to Modify
+
+- `frontend/historico-partida.html`
+- `frontend/assets/js/historico-partida.js`
+- `frontend/assets/css/historico-scoreboard-detail.css`
+- `ai/tasks/done/TASK-143-player-table-hover-stats-panel.md`
+
+## Constraints
+
+- Do not modify backend unless absolutely necessary.
+- Do not modify recent match card layout.
+- Do not reintroduce timeline/events/confidence/source/base or Elo/MVP blocks.
+- Preserve Aliados/Eje/No disponible visual distinction.
+
+## Validation
+
+- `node --check frontend/assets/js/historico-partida.js`
+- `node --check frontend/assets/js/historico.js`
+- `node --check frontend/assets/js/historico-recent-live.js`
+- `docker compose build --no-cache frontend`
+- `docker compose up -d frontend`
+- Browser verification on `historico-partida.html`
+- Browser smoke verification on `historico.html`
+
+## Outcome
+
+Implemented. The match detail player table now shows only Jugador, Equipo, K, D, TK, K/D and KPM. Expanded player statistics are rendered in per-player detail panels that open on row hover, keyboard focus/Enter and touch/click via an accessible info control. The panel includes the player/team summary, weapons, most killed, death by and direct matchup balance derived from most_killed and death_by.
+
+Validation passed:
+
+- `node --check frontend/assets/js/historico-partida.js`
+- `node --check frontend/assets/js/historico.js`
+- `node --check frontend/assets/js/historico-recent-live.js`
+- `docker compose build --no-cache frontend`
+- `docker compose up -d frontend`
+- Browser verification on `historico-partida.html` for `comunidad-hispana-02:1779178461:1779183861:carentanwarfare`
+- Browser smoke verification on `historico.html?nocache=player-table-hover`
+
+Notes:
+
+- Browser plugin runtime tools were not exposed by tool discovery in this session, so rendered validation used local Chrome/Selenium fallback.