# Phase 11 — Dynamic Task System Report

## Completion status

Phase 11 is complete. The web runtime now provides dynamic task/category administration, public task discovery, server-timed attempts, manual verification review, idempotent claims, and atomic ledger-backed task rewards.

## Delivered components

- Migration `016_harden_task_completion.sql` adds optimistic versions, immutable attempt snapshots, claim idempotency, task/attempt consistency checks, and a generated unique active-attempt guard.
- The public task list applies server-owned feature, account, ban, schedule, category, eligibility, type, daily, cooldown, and global-cap rules without revealing destination URLs.
- Task start locks authoritative rows, closes expired work, blocks concurrent active attempts, generates server timestamps, and snapshots every reward-critical value.
- Attempt status derives timer and verification state from UTC server time; browser timers are display-only.
- Claims recheck all critical invariants and create the completion plus balanced double-entry ledger reward in one transaction.
- Start, claim, completion period, active attempt, and ledger idempotency/uniqueness protections cover replay and concurrency boundaries.
- Timer and manual verification can be published. Callback and Telegram-membership modes are draft-only until secure signed integrations exist.
- Admin task, category, lifecycle, attempt, and manual-review endpoints have separate RBAC permissions, network policy, CSRF, validation, rate limiting, and audit coverage.
- Task/category updates use optimistic `version` fields and reject stale writes.
- Admin CSRF token issuance now binds correctly whenever an authenticated Admin session is present.
- MySQL `DATETIME` comparisons are normalized as UTC, preventing host-timezone-dependent timer behavior.

## Security and financial boundaries

- The client cannot set the reward, currency, timestamps, limits, status, completion, ledger reference, or balance.
- Task destinations cross the public boundary only after a valid, idempotent start.
- Reward and currency snapshots protect already-started attempts from later Admin edits.
- One generated active slot prevents simultaneous active attempts for the same task/user pair.
- Claim keys are HMAC-digested; raw keys are not stored.
- A manual approval does not post money. The authenticated user must claim the verified attempt.
- A task reward debits the system task-reward pool and credits the user's available account with equal server-controlled integer minor units.
- External-link opening alone is never represented as provider verification.
- Phase 11 adds no paid chance, stake, deposit, purchase requirement, or gambling mechanism. The existing Mystery Box remains strictly free-only and claim functionality remains deferred.

## Verification result

The complete automated suite passes **191 of 191 tests**. Phase 11 coverage includes strict schemas, URL allowlisting, eligibility and completion policy, UTC datetime handling, start/claim idempotency, immutable snapshots, scheduled activation, concurrent-attempt rejection, early/expired/manual claim behavior, atomic ledger settlement, Admin optimistic locking, unavailable provider fail-closed behavior, API authentication/CSRF/RBAC, SQL parameterization, migration constraints, and every previous phase regression test.

The quality gate also runs linting, formatting checks, environment-template validation, database-schema verification, CSS builds, and project-layout verification. Dependency audit, secret scanning, and release archive integrity are performed during handoff.

## Operational boundary

No live MySQL database, Telegram account, Admin account, Redis deployment, advertising provider, or real balance was accessed or modified. Migration application remains an explicit operator action after backup and target verification.

**Phase 11 status: COMPLETE AND VERIFIED.**