#624 deps: Dependabot batch #615-#623 (except #619)

Rebuilds Dependabot #615, #616+#621 (OpenTUI 0.8.1 with solid-js 1.9.18), #617+#622 (OpenCode 1 host 1.19.5), #618, #620 and #623, one family per commit. #619 (subc-client 0.23.1) is left out: claustrum-client 0.13.0 and 0.14.0 still require subc-client ^0.22.0, and a second copy breaks the build.

---

Summary by cubic

Consolidates Dependabot PRs #615-#623 (except #619) so each dependency family updates in one commit; the OpenTUI/Solid renderer pair and the OpenCode 1 host/SDK family must each move together because of peer-dependency constraints.

• Uses @opentui/core/@opentui/solid 0.8.1 with solid-js 1.9.18 (@opentui/solid 0.7.0 pinned 1.9.12 exactly; 0.8.1 requires ^1.9.16).
• Pins the OpenCode 1 host and its SDK to 1.19.5 everywhere: fixtures, tests, packed host, and the release workflow. The new pin also invalidates the stale CI npm cache.
• Bumps @babel/parser to 8.0.10, @ai-sdk/anthropic to 4.0.94, @biomejs/biome to 2.6.4, and jdx/mise-action to 5.2.5. Biome's format check required no source changes.
• Leaves subc-client 0.23.1 out: claustrum-client 0.13.0 and 0.14.0 still require subc-client ^0.22.0, and a second copy breaks the build.