[FEATURE]: AI-generated Post-Debate Performance Report

[Mansi2007275]

Feature and its Use Cases

Problem

Right now once a debate ends, the user just sees win/loss and optionally a
transcript export (#403). There's no actual feedback on how well they
argued — no scoring, no idea which points were weak, no guidance on what
to improve next time.

Proposed Feature

Show an AI-generated performance report right after the debate ends (both
vs-bot and vs-human/team modes):

1. Overall scores — persuasion, clarity, rebuttal effectiveness (0-100 each)
2. Per-argument breakdown — each statement tagged Strong/Moderate/Weak
   with a one-line reason (e.g. "no supporting evidence")
3. Fallacy flags — can reuse [FEATURE]: integrate DeBERTa-base LocalLLMClient for EDIS fallacy detection #377's fallacy detection if that lands
   first, otherwise a simple LLM prompt on the transcript works as v1
4. Improvement tips — 2-3 specific suggestions based on the actual
   transcript, not generic advice

Approach

• New endpoint that generates the report once after a debate ends and
  caches it (no regenerating on every view)
• Reuse the existing LLM client already used for debate responses
• New results component to show scores + breakdown + tips instead of
  just win/loss

Why this matters

This is what actually makes DebateAI useful for improving as a debater,
not just playing. #403 only exports the raw transcript and #377 is just
the detection model — neither gives the user a readable, actionable report.

Additional Context

No response

Code of Conduct

• I have joined the Discord server and will post updates there
• I have searched existing issues to avoid duplicates

[ayesha-arbi]

I’m a first-time contributor to AOSSIE-Org and I’d like to work on this issue. Could you please assign it to me?