Release v0.0.12

New spinner animation

Auto-clear todo list when all tasks are completed

When all todos in the list are marked as completed, automatically clear
the store and return a completion message instead of persisting the list.

Co-Authored-By: BitCode <https://github.com/sazid/bitcode>

Add LineCount and FileSize tools for measuring files before reading

These tools help the agent assess file size before reading to avoid
wasting context window space on large files:

- LineCount: Fast SIMD-optimized line counting using bytes.Count
  (~5-10 GB/s throughput with 1MB buffer)

- FileSize: Returns file size in bytes with human-readable format

Both tools are registered and the system prompt updated to instruct
the agent to measure files before reading large content.

Co-Authored-By: BitCode <https://github.com/sazid/bitcode>

Fix missing quote

Add system reminders for reading and updating instruction files

Fix release pipeline

Fix duplicate asset upload in release

Co-Authored-By: BitCode <https://github.com/sazid/bitcode>