v0.5.2

Reasoning-model streaming (#24). Reasoning models (e.g. kimi-k2.6:cloud,
deepseek-r1) stream their chain-of-thought in delta.reasoning with empty
delta.content; the OpenAI-compatible parser previously ignored it, so the TUI
showed a frozen blank during a long reasoning phase. TUI/provider only — the agent
loop, persistence, crypto, and /consult are unchanged.

Added

• Live "thinking" feedback for reasoning models. By default a compact
  🤔 MAGI Pensando… indicator with an animated spinner shows while the model
  reasons, instead of a frozen blank. The reasoning text itself is never
  persisted to the encrypted store.
• /toggle-show-thinking switches between the compact indicator (default) and
  a verbose mode that streams the full chain-of-thought inline (useful for
  debugging). Added to /help.

Fixed

• Reasoning-model chats no longer appear frozen: the parser now surfaces
  delta.reasoning as a distinct stream instead of dropping it.

Known limitations

• In the verbose mode (/toggle-show-thinking), the reasoning and the answer are
  streamed into the same message bubble and can visually run together; the default
  compact mode is unaffected.

Full Changelog: v0.5.1...v0.5.2