docs(ci): drop bullet descriptions, keep only link + one-liner

Per mara/argus feedback: no need to describe job contents inline,
just link to the workflow file.

docs/ci.md

@@ -111,21 +111,9 @@ to avoid provisioning collisions.
 ## CI workflow
 
 Three jobs are defined in [`.forgejo/workflows/ci.yml`](../.forgejo/workflows/ci.yml):
-
-- **`nix flake check`** — all flake checks: formatting (treefmt+rustfmt),
-  cargo test, cargo clippy, module evaluation, `hivectl-docs` freshness.
-  No `--no-build`: the check derivations are the canonical source of truth.
-  30-minute wall-clock cap.
-- **`tracker-tag lint`** — flags `#NNN` tracker references in non-markdown
-  source (hive convention: use prose in code, not tags). Non-blocking for
-  now (doesn't gate merge) while the legacy backlog is cleaned up.
-- **`comment-block lint`** — flags contiguous comment blocks over 30 lines.
-  Prose belongs in `docs/`, not inline. Also non-blocking while the tree
-  settles.
-
-All three jobs run in parallel on each PR push. `hive-forge ci-rerun --pr N`
-dispatches a fresh `workflow_dispatch` run without an empty commit — the
-correct way to retry a transient CI failure.
+`nix flake check` (required), `tracker-tag lint`, and `comment-block lint`. The
+lint jobs are non-blocking while the legacy backlog clears. `hive-forge ci-rerun
+--pr N` dispatches a `workflow_dispatch` retrigger without an empty commit.
 
 ## Security: unsandboxed builds and trusted contributors