Rename the settings whose names do not say what they control (closes #234)

Applies the setting renames of the naming audit under the SWW_WAF_ and
SWW_RPROXY_ prefixes, with sneak's names for the IP reputation cache
time and the two time limits, which now take milliseconds. The rproxy
log field default_disposition becomes waf_backend_no_answer, and
config.Config and config.FromEnvironment become config.WAF and
config.WAFFromEnvironment. Go fields, test names and prose follow. No
aliases; nothing reads the old names.

Model: opus-5-5

internal/coreruleset/mediawiki_test.go

@@ -9,7 +9,7 @@ import (
 	"sneak.berlin/go/smallwebwaf/internal/coreruleset"
 )
 
-// mediawikiThreshold is SWW_WAF_CORE_RULE_SET_ANOMALY_THRESHOLD's default.
+// mediawikiThreshold is SWW_WAF_CORE_RULE_SET_SCORE_THRESHOLD's default.
 const mediawikiThreshold = 5
 
 // mediawiki is MediaWiki's name in SWW_WAF_APPS.
@@ -76,7 +76,8 @@ func TestMediaWikiWatchlistFixAppliesOnlyToAHostnameThatServesMediaWiki(
 	t.Parallel()
 
 	crs := shared(t, coreruleset.Params{
-		ParanoiaLevel: 1, DisabledRules: defaultDisabledRules, BodyLimit: bodyLimit,
+		ParanoiaLevel: 1, DisabledRules: defaultDisabledRules,
+		BodyInspectionSize: bodyInspectionSize,
 		Apps: map[string][]string{
 			giteaHost: {gitea},
 			otherHost: {mediawiki},
@@ -120,7 +121,8 @@ func TestMediaWikiPasswordFixesApplyOnlyToAHostnameThatServesMediaWiki(
 	t.Parallel()
 
 	crs := shared(t, coreruleset.Params{
-		ParanoiaLevel: 1, DisabledRules: defaultDisabledRules, BodyLimit: bodyLimit,
+		ParanoiaLevel: 1, DisabledRules: defaultDisabledRules,
+		BodyInspectionSize: bodyInspectionSize,
 		Apps: map[string][]string{
 			giteaHost: {gitea},
 			otherHost: {mediawiki},