Feat/time

[nafiuishaaq]

Added the advanced middleware package in the middleware workspace for both timeout protection and circuit breaking. The timeout middleware/module is in timeout.middleware.ts (line 1), and the breaker state machine, middleware, and registration module are in circuit-breaker.middleware.ts (line 1). The breaker now supports configurable failure threshold, rolling failure window, half-open retry interval, CLOSED -> OPEN -> HALF_OPEN transitions, and exposes state via getState() / getSnapshot() on CircuitBreakerService.

I also exported the new advanced middleware surface through middleware/src/index.ts (line 1) and added state-machine coverage in circuit-breaker.middleware.spec.ts (line 1) plus timeout behavior checks in timeout.middleware.spec.ts (line 1). Those tests cover:

timed-out requests producing 503
circuit opening after the configured number of failures
OPEN -> HALF_OPEN
HALF_OPEN -> CLOSED on success
HALF_OPEN -> OPEN on failure

CLoses #355

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