fix(chart): quote rendered helm args

[szibis]

Summary

• quote rendered chart args in
• prevent YAML breakage when extraArgs or observability-derived args contain JSON or other special characters
• add a CI regression render covering quoted args like and

Validation

• WARNING: both 'platformCommand' and 'command' are set in "/Users/slawomirskowron/Library/helm/plugins/helm-secrets/plugin.yaml" (this will become an error in a future Helm version)
  WARNING: both 'platformCommand' and 'command' are set in "/Users/slawomirskowron/Library/helm/plugins/helm-secrets/plugin.yaml" (this will become an error in a future Helm version)
  ==> Linting charts/loki-vl-proxy
  Error unable to check Chart.yaml file in chart: stat charts/loki-vl-proxy/Chart.yaml: no such file or directory

Why

The current chart emits raw arg strings, which breaks manifest rendering for JSON-valued args used downstream in real deployments.

[github-actions]

PR Quality Report

Compared against base branch main.

Coverage and tests

Signal	Base	PR	Delta
Test count	1807	1807	0
Coverage	89.3%	89.3%	0.0% (stable)

Compatibility

Track	Base	PR	Delta
Loki API	100.0%	11/11 (100.0%)	0.0% (stable)
Logs Drilldown	100.0%	17/17 (100.0%)	0.0% (stable)
VictoriaLogs	100.0%	11/11 (100.0%)	0.0% (stable)

Compatibility components

Track	Component	Base	PR	Delta
Loki API	label_values	2/2 (100.0%)	2/2 (100.0%)	0.0% (stable)
Loki API	labels	4/4 (100.0%)	4/4 (100.0%)	0.0% (stable)
Loki API	metrics	2/2 (100.0%)	2/2 (100.0%)	0.0% (stable)
Loki API	otel	1/1 (100.0%)	1/1 (100.0%)	0.0% (stable)
Loki API	query_range	1/1 (100.0%)	1/1 (100.0%)	0.0% (stable)
Loki API	series	1/1 (100.0%)	1/1 (100.0%)	0.0% (stable)
Logs Drilldown	detected_fields	11/11 (100.0%)	11/11 (100.0%)	0.0% (stable)
Logs Drilldown	label_values	1/1 (100.0%)	1/1 (100.0%)	0.0% (stable)
Logs Drilldown	level_volume	2/2 (100.0%)	2/2 (100.0%)	0.0% (stable)
Logs Drilldown	patterns	1/1 (100.0%)	1/1 (100.0%)	0.0% (stable)
Logs Drilldown	service_logs	1/1 (100.0%)	1/1 (100.0%)	0.0% (stable)
Logs Drilldown	service_selection	1/1 (100.0%)	1/1 (100.0%)	0.0% (stable)
VictoriaLogs	detected_fields	4/4 (100.0%)	4/4 (100.0%)	0.0% (stable)
VictoriaLogs	field_values	3/3 (100.0%)	3/3 (100.0%)	0.0% (stable)
VictoriaLogs	index_stats	1/1 (100.0%)	1/1 (100.0%)	0.0% (stable)
VictoriaLogs	stream_translation	1/1 (100.0%)	1/1 (100.0%)	0.0% (stable)
VictoriaLogs	synthetic_labels	1/1 (100.0%)	1/1 (100.0%)	0.0% (stable)
VictoriaLogs	volume_range	1/1 (100.0%)	1/1 (100.0%)	0.0% (stable)

Performance smoke

Performance smoke was skipped for this PR because no perf-sensitive paths changed.

State

• Coverage, compatibility, and sampled performance are reported here from the same PR workflow.
• This is a delta report, not a release gate by itself. Required checks still decide merge safety.
• Performance smoke was intentionally skipped because no perf-sensitive paths changed in this PR.
• Delta states use the same noise guards as the quality gate (percent + absolute + low-baseline checks), so report labels match merge-gate behavior.