fix: detect claude selection dialogs in narrow panes

[caner-akca]

The bug

When a Claude Code pane is narrower than about 50 columns and Claude opens a selection dialog (for example AskUserQuestion), herdr agent explain and the socket API report idle even though the dialog is on screen waiting for input. Widening the same pane to 50 columns flips the same dialog to blocked.

Root cause

The live_blocked_form rule in src/detect/manifests/claude.toml required the contiguous substring esc to cancel (and contiguous sibling hints such as enter to select / ↑/↓ to navigate). Detection runs over rendered screen rows, and Claude soft-wraps that footer below ~50 columns (Esc to / cancel), so the required evidence stopped matching and the known-agent fallback reported idle. The rule had only been exercised with wide-pane captures.

What changed

• src/detect/manifests/claude.toml: the footer hints of live_blocked_form match across a single line wrap (regex with a bounded separator: spaces/tabs or one newline, never a blank line). All hint phrases in that rule get the same treatment so the dialog reports blocked at every width, not only for esc to cancel. Manifest version bumped to 2026.08.24.1 (updated_at likewise) so hosts with a cached remote manifest pick up the new rule.
• website/agent-detection/claude.toml: published copy kept byte-identical to the bundled manifest (scripts/agent_detection_manifest_check.py --require-website passes).
• src/detect/manifest/tests.rs: claude_wrapped_blocker_footer_is_blocked (the reporter's exact 48-column capture; fails on master with left: Idle, right: Blocked), claude_selection_dialog_is_blocked_at_every_wrap_width (50/48/40/34/24-column wraps and an indented continuation row, all must match live_blocked_form), and claude_wrap_tolerant_blocker_leaves_neighbouring_screens_alone (negative controls: streaming, overlay, and transcript screens keep their existing states).
• docs/next/CHANGELOG.md: one ### Fixed line.

No engine, API, or state changes; the change is confined to the Claude manifest rule and its tests.

Verification

• just test-one claude_wrapped_blocker_footer_is_blocked: exit 100 on master (left: Idle, right: Blocked), exit 0 with the fix.
• just ci (excluding live_handoff_keeps_agent_started_pane_after_agent_exits and live_handoff_keeps_unmanaged_agent_name_bound_to_saved_session, which fail on this macOS host on clean master as well), just windows-lint, and the maintenance test suite: green.
• python3 scripts/agent_detection_manifest_check.py --require-website: ok.

refs #2868

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