Fix client-side bugs, dependency pins, and misc issues

[Gahrcoder]

Summary

Assorted fixes found while testing and reading through the codebase. One per commit.

Changes

Client-side

1. Queue.tsx — The eruda cleanup function in useEffect was never returned, so eruda.destroy() never runs on unmount.

2. Conversation.tsx — buildURL is a plain function but was calling useMemo inside it, violating the Rules of Hooks. Replaced with a simple conditional.

3. useSocket.ts — onDisconnect was firing the callback unconditionally, then again for the current socket. Stale socket close events now get ignored properly.

4. .eslinrc.json → .eslintrc.json — Filename was misspelled (missing 't'), so ESLint config was silently not loading.

Server-side

5. loaders.py — Three print() calls used %s placeholders but Python's print doesn't do printf formatting — these were printing tuples instead of formatted strings. Switched to f-strings.

6. server.py — hf_hub_download(repo, 'config.json') is analytics-only but crashes when HF_HUB_OFFLINE=1 is set (issue Disabling Huggingface access causes failure #54). Now skipped in offline mode.

7. pyproject.toml — torch < 2.5 blocks Python 3.13 and CUDA 13.0/Blackwell support (issues PersonaPlex produces choppy/unusable audio on DGX Spark (GB10) #3, Current PyTorch dependencies don't work with CPython 3.13 #22). aiohttp < 3.11 is also unnecessarily restrictive. Removed upper bounds for both.

Testing

All changes are backwards-compatible. The React fixes resolve runtime errors that would occur on disconnect or component mount/unmount cycles.