Add next Stats improvement tasks

ai/tasks/pending/TASK-176-add-stats-player-comparison-cards.md

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+---
+id: TASK-176-add-stats-player-comparison-cards
+title: Add stats player comparison cards
+status: pending
+type: frontend
+team: Frontend Senior
+supporting_teams:
+  - Experto en interfaz
+  - Backend Senior
+roadmap_item: foundation
+priority: high
+---
+
+# TASK-176-add-stats-player-comparison-cards - Add stats player comparison cards
+
+## Goal
+
+Improve the Stats UI with comparison cards that help a selected player quickly understand personal metrics and weekly/monthly position, using already available backend data and without creating new endpoints.
+
+## Context
+
+The Stats page already exposes player lookup and detail payloads. This task should improve clarity and trust by surfacing key performance values in cards, while preserving empty/loading/error behavior and the existing visual identity.
+
+## Steps
+
+1. Read the listed files first.
+2. Add UI card components in the existing Stats section for selected-player context.
+3. Consume existing fields from current responses only, without changing API contracts.
+4. Show explicit states for missing ranking, insufficient ranking depth, or missing player in weekly/monthly snapshots.
+5. Keep design aligned with military/Vietnam/tactical sober style and keep existing empty/loading/error states intact.
+
+## Files to Read First
+
+- AGENTS.md
+- ai/repo-context.md
+- ai/architecture-index.md
+- docs/stats-section-functional-plan.md
+- frontend/stats.html
+- frontend/assets/js/stats.js
+- frontend/assets/css/styles.css
+- backend/app/rcon_historical_player_stats.py
+- ai/tasks/done/TASK-172-polish-stats-section-empty-states-and-copy.md
+
+## Expected Files to Modify
+
+- frontend/stats.html
+- frontend/assets/js/stats.js
+- frontend/assets/css/styles.css
+- ai/tasks/done/TASK-176-add-stats-player-comparison-cards.md
+
+## Constraints
+
+- No backend modifications.
+- No new endpoints.
+- No database changes.
+- Do not change existing API contracts.
+- Do not re-enable Elo/MMR.
+- Do not reintroduce Comunidad Hispana #03.
+- Do not introduce frameworks.
+- Keep vanilla HTML/CSS/JS implementation.
+- Keep military/Vietnam/tactical/sober visual identity.
+- Preserve existing empty/loading/error states and avoid regressions.
+
+## Validation
+
+- Run `node --check frontend/assets/js/stats.js`.
+- Run `powershell -ExecutionPolicy Bypass -File scripts/run-integration-tests.ps1`.
+- Serve frontend with `python -m http.server` and verify HTTP 200 for `stats.html` and `assets/js/stats.js`.
+- If possible, visually validate with local backend.
+- Run `git diff --name-only` and verify scope is limited to this task.
+
+## Outcome
+
+Document which comparison cards were added, payload fields consumed, behavior with no data, and any remaining follow-up improvements.
+