…ient (#5216) (#5343)

…5386)

Remove assert(!this.paused) from Parser.finish() so that when the HTTP/1
parser is paused under backpressure (body not consumed) and the socket
ends (FIN), the parser can finish gracefully instead of throwing an
uncatchable AssertionError from the socket 'end' handler.

llhttp_finish() already handles paused state by returning ERROR.PAUSED,
which is handled in the existing code path by setting this.paused = true
and returning null.

Fixes #5360

Drain already running requests before rejecting same-servername pending requests so TLS hostname failures reject the request promises instead of tripping the queue assertion.

Fixes #5355

Signed-off-by: marko1olo <barsukdana@gmail.com>

Fixes #5382

- GettingStarted.md: use string literals instead of static .code (undefined)
- RetryHandler.md: fix constructor signature, add TRACE to default methods, add EHOSTUNREACH/EPIPE to default errorCodes
- RetryAgent.md: fix return type (ProxyAgent -> RetryAgent), same defaults fixes
- BalancedPool.md: fix property heading (Pool.stats -> BalancedPool.stats)
- Errors.md: fix Socks5ProxyError code (UND_ERR_SOCKS5* -> UND_ERR_SOCKS5)
- MockAgent.md: fix method name (clearAllCallHistory -> clearCallHistory)
- Dispatcher.md: fix broken link (Dispatch.md -> Dispatcher.md), add onBodySent to DispatchHandler

Fixes #3322

Several previous PRs (#3807, #3820, #5065) fixed many broken links
in the Docsify-based documentation, but a number of relative links
remained that resolve incorrectly on the live site.

Changes:
- Pool.md: PoolStats.md -> /docs/docs/api/PoolStats.md
- RoundRobinPool.md: PoolStats.md -> /docs/docs/api/PoolStats.md
- MockCallHistory.md: ./MockCallHistoryLog.md#to-string -> /docs/docs/api/MockCallHistoryLog.md#to-string
- SnapshotAgent.md: 3 relative links -> absolute /docs/docs/api/ and /docs/docs/best-practices/ paths
- api-lifecycle.md: 7 Client.md relative links -> /docs/docs/api/Client.md
- Dispatcher.md: Dispatch.md -> /docs/docs/api/Dispatcher.md
- Fetch.md: /docs/api/ -> /docs/docs/api/

All links now use the consistent /docs/docs/api/ absolute path pattern
established in the previously merged PRs.

## Status
- [x] I agree to the Developer Certificate of Origin 1.1
- [x] Documentation fix
- [x] Ready for review

Co-authored-by: Z User <z@container>

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>