Models stage-d (default) + stage-e (next-edit companion); extension 0.6.1

- stage-d: next-line / block-close / multi-line fixes, symbols format 2, TS errors in the header.
  Held-out: 0.426 exact / 0.700 edit sim (stage-c 0.405 / 0.689); block close 0.27 -> 0.79.
- stage-e: next-edit (80% exact region rewrites, abstains on 100% of no-edit samples).
- Manifest: nextEditModel (companion) and nextEditFormat (older extensions ignore it, so they
  never use next-edit with the empty-output deletion bug).
- Daemon: next-edit served by the companion model in a second llama-server, started after the
  main model loads.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01J39imRDT8L7xYbWzsVWd8A

models/NOTICE

@@ -2,6 +2,7 @@ These model files are modified versions of Qwen2.5-Coder-0.5B (https://huggingfa
 Copyright (c) Alibaba Cloud, licensed under the Apache License, Version 2.0 (see LICENSE).
 
 Modifications: full-parameter fine-tuning for suffix-first fill-in-the-middle completion
-(and, for stage-c, a repository/symbol-context header), followed by Q8_0 GGUF conversion.
+(and, from stage-c on, a repository/symbol-context header; stage-d adds TypeScript errors; stage-e adds
+next-edit prediction), followed by Q8_0 GGUF conversion.
 Fine-tuning data: permissively licensed (MIT) open-source TypeScript/Vue repositories and
 the publisher's own code. Secrets were scrubbed from the training data.