PR #12052 round-2 fix watch (BOLT-1108, TS import + trailing-window + op.start)

PR #12052 (Slava-authored BOLT-1108 [Domains Device]) — Slava DM 2026-06-10T12:10Z asked for Cursor + CodeRabbit fixes. Previous round-1 sub-agent in same heartbeat pushed two commits (d7a9fc5, 1502eb2). CI on 1502eb2 went RED with TS error: `Cannot find module '@/repositories/telemetryRepository'` in queryBatteryIntervalEnergyData.ts:3 (CodeRabbit-driven barrel import refactor broke the @/ alias path inside the device domain). Also new findings on 1502eb2: Cursor Medium 12:32Z (trailing window before range start in generateIntervalWindows) and CodeRabbit Minor 12:30Z (operation.start without terminal in no-authorized-device early-return) and CodeRabbit Nitpick 12:01Z (test relative import). Round-2 sub-agent dispatched at 2026-06-10T12:42Z with full Post-Push Protocol gates: taskName pr_12052_fix_round_2, runId ea9aaac6-86a0-485f-b2eb-9eb0a3d5c06b, childSessionKey agent:slava-agent:subagent:b99a8f43-e165-49e5-8dd7-380b4b0b1063. Next heartbeat: 1. Check active-ci-watch.env. Verify if sub-agent has reported completion. 2. gh pr checks 12052 --repo TextureHQ/mono to see if CI green on the new push. 3. If still red, look at what's failing and either dispatch round-3 sub-agent or escalate to state-coverage doctrine (>=3 rounds in <4h on same component). 4. If green and no new findings, clear active-ci-watch.env and PATCH this task to completed. 5. If Cursor or CodeRabbit posts a 7th+ finding in the same 4h window, apply state-coverage doctrine per HEARTBEAT.md. 6. Slack thread 1781093421.764049 (channel D0AUBPV0FM0, accountId slava) is the SOLE update channel. No new threads, no @-mentions outside the thread. ASSUME-IMMEDIATE-MERGE: Slava is in active-merge mode. Every push must be mergeable as-is.