Two operator-felt papercuts on the editor:
* Models only appeared after a manual Refresh click. Now the
editor calls `_refreshModels()` from initState (post-frame)
so chips populate immediately. Provider switch also re-fires
the refresh because endpoint / model set changes too.
* Operator had no signal which model is suitable. Tiny models
fail at instruction following; huge models stall on a
laptop. Adds a heuristic suitability rating (parses
parameter count from common names like `gemma3:4b`,
`llama3.2:70b`; falls back to family hints for OpenAI /
Claude). Each chip now carries:
- a coloured leading dot (green=balanced, orange=small
or large, red=huge, grey=unknown)
- a star icon for the hand-curated "tested with F∆I"
allowlist (gemma3:4b, llama3.2:3b, qwen2.5-coder:7b,
gpt-4o-mini, claude-haiku-4-5, …)
- a tooltip ("balanced", "huge — likely too slow on a
laptop", …)
Sorting also moves recommended → balanced → others to the
front so the operator's eye lands on green first.
* Compact legend below the chip wrap explains the colour
code in place — no lookup needed.
Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>