Remove stale phase/spec references from code comments

Strip "Phase N", "SPEC §X.Y", and "v1.x" planning labels from comments
across the Rust crates and editor layers now that those tracking
artifacts are gone. Comments only — no logic, strings, or test names
touched.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

crates/nuwiki-lsp/src/diagnostics.rs

@@ -1,6 +1,6 @@
 //! Diagnostic sources beyond parse-time `ErrorNode`s.
 //!
-//! Phase 15 lands the `nuwiki.link` source — broken-link warnings. Walks
+//! The `nuwiki.link` source emits broken-link warnings. Walks
 //! every `WikiLinkNode` in the AST and emits one diagnostic per:
 //!   - `Wiki` target that doesn't resolve to a page in the workspace index,
 //!   - `Wiki`/`AnchorOnly` target with an anchor that matches neither a
@@ -8,7 +8,7 @@
 //!   - `File`/`Local` target whose resolved path doesn't exist on disk.
 //!
 //! Interwiki, Diary, Raw, and external links are not diagnosed —
-//! interwiki resolution is Phase 18's job, diary is Phase 16's, and we
+//! interwiki resolution and diary handling live elsewhere, and we
 //! don't fetch URLs.
 
 use std::path::PathBuf;
@@ -332,8 +332,7 @@ fn resolve_file_path(
     index.root.as_ref().map(|r| r.join(&candidate))
 }
 
-/// `nuwiki.link` diagnostics for a single document. Phase 11 left this as
-/// a stub; Phase 15 fills it in.
+/// `nuwiki.link` diagnostics for a single document.
 pub fn link_health(
     ast: &DocumentNode,
     text: &str,