docs: document attention taxonomy flag

CHANGELOG.md

@@ -6,6 +6,7 @@ so entries say what changed, cite the issue, and stop.
 
 ## Unreleased
 
+- `attention` — add the issue-only, hand-set assignee-demand flag to the core label taxonomy (#84).
 - `issueflow-reconcile` — keep cross-repo references out of local dependency decisions and require triage to resolve cross-repo blockers by hand (#61).
 - `needs-ruling` — the cross-cutting flag for a pending human decision, excluded from `state:needs-human` and from the staleness sweep (#51).
 - Cross-repo doctrine: the panel is the PR's repo's roster, a review request is authorization but not panel membership, and `Part of <repo>#N` replaces the `Closes #N` that cannot cross repos (#57).

LABELS.md

@@ -68,6 +68,7 @@ comments, unassigns the stale owner, and restores `ready`.
 | `blocked` | `#6A737D` | (see above — same label serves PRs waiting on another PR/issue; legitimately quiet, the staleness sweep skips it) |
 | `offsite` | `#CFD3D7` | issue deliverable is a PR in another repository; set by the builder with the draft link and cleared by the builder at handoff |
 | `needs-ruling` | `#D4C5F9` | a human-owned decision is required; use BUILDER.md's ruling template and ladder. Set by triage or the builder; a state, not a signal — it clears on agreement, not on a reply |
+| `attention` | `#D93F0B` | issue-only demand parked for the assignee; hand-set, and never written by the machine |
 | `release` | `#0E8A16` | release flow, versioning, packaging work — and the ceremony PR itself |
 | `merge-next` | `#0E8A16` | head of the merge queue — merge this one next. Queue order is *intent*: never set by the reconciler, only cleared by it |