R1B: preserve exact Static Reporting route through live report attach

[masarray]

Stacked on R1A PR #136 and milestone #129. Do not merge independently into main.

Problem fixed

The Dataset Signals → bound RCB selection could be made from the canonical offline/discovered model, but entering Reports attaches the live report service. That attach rebuilds the live DataSet/RCB inventory and previously reset selection to row 0, so the operator's exact static DataSet choice could silently drift.

R1B behavior

• Persist the chosen canonical static DataSet reference as a report route.
• On live report-service attach/re-attach, restore only an RCB whose live probe succeeded and whose DatSet binding matches that exact canonical reference; when several RCBs bind the same DataSet, use the existing pool selector's best selectable/preferred candidate rather than first-row order.
• If there is no verified live bound RCB, leave reporting unselected/disabled and surface a diagnostic instead of choosing another RCB.
• Selecting another DataSet or manually choosing another RCB clears the armed route, so user intent always wins.
• UI now calls the action Static Reporting… and shows a compact STATIC · <DataSet> indicator before the still-explicit Enable + GI command.
• No automatic GI, no automatic RCB enable, no DatSet write, and no cyclic MMS polling fallback is introduced.

Behavioral QA

ied_report_workspace_qa now selects the Dataset Signals route, disconnects/re-attaches the Reports association, verifies the same canonical DataSet + a live-probed selectable RCB are restored, then proceeds to the existing explicit GI test. Success emits STATIC_REPORT_ROUTE_RESTORE_PASS.

Acceptance: exact-head Qt/C++/Release Hardening green. Real AA1E1F06R4 acceptance remains required for full R1.

• Rendered Browser QA can now save and upload an exact 1024px Browser screenshot from the same functional route test; this replaces relying on the Simulator-tab screenshot for Browser UX review.
• Qt/Release workflow concurrency now deduplicates push + PR validation by head branch so stale duplicate jobs no longer consume runners.