LorenEteval_Furious/Furious/Service/AGENTS.md

Service guidance

• Services own workflows and temporary resources; controllers own shared application state. Services may use Qt for asynchronous I/O/signals but must not own pages or encode presentation policy.
• Never instantiate QObject services such as network-access managers at module import time. Acquire them after the application exists, give them one explicit service/application owner, and release them during that owner's cleanup.
• Inject repositories, runtimes, clients, clocks, and callbacks where practical. One service owns each worker, reply, timer, executor, process, and cache; cleanup is bounded and idempotent.

Connection and configuration

• ConnectionManager coordinates plugin capabilities, core runtimes, proxy/TUN/routing, and rollback. Its runtimes collection contains semantic runtime owners, not necessarily operating-system processes. It consumes runtime copies and never mutates persisted profiles.
• Preserve the backend native-TUN decision reported by capabilities. Start application tun2socks only when no native TUN is handled; proxy-only operations strip TUN explicitly.
• Connection startup is one private staged attempt over a runtime configuration copy. Track each exact runtime as soon as it is acquired; failures roll back only that attempt in reverse order, and commit transfers ownership to the manager's normal lifecycle.
• Startup either reaches a valid running state or rolls back every process/host mutation with an actionable error. Shutdown and unexpected-exit paths are bounded and safe to repeat.

Async, network, and background work

• Each asynchronous workflow defines one explicit ownership and supersession policy: a generation/version where stale completion is possible, or exact reply/future ownership where requests are independent. Partial results may publish independently; terminal reply paths abort or finish once and schedule deletion once.
• Bound network, DNS, process, host, and worker work where the provider permits it. Executor callbacks use weak or otherwise bounded ownership and must not retain a manager forever after shutdown; GUI updates cross via signals.
• Log storage has independent count, total-character, and per-entry hard bounds even when automatic clearing is disabled. High-rate producers must coalesce GUI notifications; hiding a page may defer rendering but must never defer draining a process pipe or bounded transport queue.
• Metric history has both a time horizon and a defensive sample-count ceiling. Derive graph buckets on demand rather than retaining a second ever-growing history.
• Every network reply has a finite transfer timeout unless a documented caller supplies a stricter one. Track replies by exact object identity, remove every context on the terminal path, and schedule the reply for deletion exactly once.
• Per-subscription versions exist only while the persisted subscription, its timer, or an active reply needs them; repeated create/delete cycles must not grow bookkeeping dictionaries.
• Logging and metrics collect while pages are hidden but avoid hidden-page rendering. Raw time-series samples are immutable; stable timestamp buckets are derived display data.
• Log retention is owned by LogManager, not a text document. Category pruning/reset notifications must keep lazy UI sequence state valid.
• Endpoint inspection must enforce the active proxy path, reject stale connection results, use neutral request metadata, and disclose actual external providers without sending profile secrets.
• SubscriptionManager owns download, decoding, filtering, reconciliation, persistence effects, stale-request rejection, and stable-ID auto-update timers. Subscription views invoke commands and render semantic results; they do not own this workflow. Remote data is untrusted.

Code review rules

• Flag widgets retained by services, unbounded executor/network/process work, callbacks that capture service owners after shutdown, UI-only cache invalidation, and swallowed provider failures.
• Test success, partial/stale/timeout/cancel/failure, hidden-page behavior, repeated cleanup, and worker/reply lifetime with fakes—never real host mutation.