refactor: improve S3 configuration defaults, mark unused functions, a… #4

	name: stress

	# Client-only stress gate (nemesis-style, libsql pattern): runs the full
	# client stress suite — build, C suites, DLQ tool, throughput stress with
	# backup/outbox machinery alive — on every src/tests change, and on demand.
	#
	# The control plane is a private business codebase and never runs against
	# public CI, so scripts/stress.sh runs in --client-only mode (Phases 2-6
	# skipped). The C suites here overlap ctest in ci.yml, but this workflow
	# adds what ctest deliberately does not: the correctness-asserting
	# benchmark stress_200m under load with the backup subsystem enabled.

	on:
	workflow_dispatch:
	push:
	branches: [ "main" ]
	paths:
	- "src/**"
	- "tests/**"
	- "scripts/**"
	- "tools/**"
	- "CMakeLists.txt"

	concurrency:
	group: ${{ github.workflow }}-${{ github.event.pull_request.number \|\| github.ref }}
	cancel-in-progress: true

	jobs:
	client-stress:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: Install Dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install -y libcurl4-openssl-dev sqlite3

	- name: Run client-only stress suite
	run: bash scripts/stress.sh --client-only
	env:
	# CI-tuned sizes: 100k ops keeps the gate fast; crank these in a
	# workflow_dispatch run for a real soak (STRESS_WRITES=200000000).
	STRESS_WRITES: "100000"

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