Fixes
- fix(ci): opencode2 native install check: a failed temp-dir clean-up on Windows is not a failed check (D-OC2-NATIVE-CMD-1)
- fix(opencode): OpenCode 2 native install is 'opencode plugin add context-mode@next' (D-OC2-NATIVE-CMD-1)
- fix(search): D-SEARCH-SMALL-1 smaller ctx_search replies on small sources, no empty query blocks
- fix(release): dev tree version follows the highest v2 tag (D-DEV-VERSION-1)