docs: the changelog fragment says lane A's routing hook and contract check have landed

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

changelog.d/capy-gst-1088-lane-b.md

@@ -1,4 +1,4 @@
-**/investigate, /review, /qa and /verify now say when to use them, and /investigate and /review declare what "done" means (GST-1088 lane B).** Untold, Opus 5.5 never opened /investigate in 252 trials (Run D, gstack-evals#140). A when-to-use description raised GPT-6.1 Sol's open rate from 9.5% to 27.0% in the same run. Claude Code's catalog shows only a description's first sentence, so each of the four now opens with a "Use when ..." sentence. The routing hook and the contract check that read the new frontmatter ship separately (lane A), both off by default.
+**/investigate, /review, /qa and /verify now say when to use them, and /investigate and /review declare what "done" means (GST-1088 lane B).** Untold, Opus 5.5 never opened /investigate in 252 trials (Run D, gstack-evals#140). A when-to-use description raised GPT-6.1 Sol's open rate from 9.5% to 27.0% in the same run. Claude Code's catalog shows only a description's first sentence, so each of the four now opens with a "Use when ..." sentence. The routing hook and the contract check that read the new frontmatter landed in v1.94.6.0 (lane A, off by default; see docs/skill-routing-and-contracts.md), so the "Done means" list now also names `gstack-skill-contract check` and `waive`.
 
 ### Changed
 - **Descriptions**: the first sentence of each is now a when-clause, for example /investigate's "Use when a test fails, code errors or output is wrong: find the root cause, then fix it." Hosts that show the full description also get the longer list of situations. The catalog stays within its existing budget.