chore(release): 0.3.0

Bump workspace + internal dep pins + g:nuwiki_version to 0.3.0.

Since 0.2.0:
- feat(config): read g:vimwiki_list on Neovim too (lazy.nvim drop-in)
- feat(config): bridge setup({wikis}) to g:nuwiki_wikis for VimL plugins
- feat(calendar): diary into the current wiki, not always the first
- fix(lsp): resolve links from anywhere in the link, including the title
- fix(install): resolve release asset via Gitea API / direct URL; guard
  download_bin.vim against 'compatible' mode

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

crates/nuwiki-ls/Cargo.toml

@@ -17,5 +17,5 @@ name = "nuwiki-ls"
 path = "src/main.rs"
 
 [dependencies]
-nuwiki-lsp = { path = "../nuwiki-lsp", version = "0.2.0" }
+nuwiki-lsp = { path = "../nuwiki-lsp", version = "0.3.0" }
 tokio = { version = "1", features = ["macros", "rt-multi-thread", "io-std"] }