Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@betterleaks/default.toml`:
- Line 77: The allowlist entry containing the regex pattern
`(?i)\bplease[-_]?(change|update|replace|rotate)\b` is too broad and may
suppress real credentials; either remove this pattern entirely or tighten it to
require credential context (e.g., require "token|key|secret|password" or
explicit words like "token" alongside the please-change phrase) so it only
matches placeholder scaffold text; update the pattern in the TOML (the literal
pattern string shown) to the constrained form or delete the line and keep the
surrounding credential-specific patterns.
- Line 70: Update the regex entry in betterleaks/default.toml so the SAMPLE
group mirrors EXAMPLE and FAKE by making the suffix group optional: change the
part matching "SAMPLE[-_]?(KEY|TOKEN|SECRET)" to include a trailing ? after the
suffix group so it will match standalone "SAMPLE" as well as
"SAMPLE_KEY"/"SAMPLE_TOKEN"/"SAMPLE_SECRET"; locate the regex string containing
'''(?i)\b(REPLACE[-_]?ME|CHANGE[-_]?ME|PLACEHOLDER|EXAMPLE[-_]?(KEY|TOKEN|SECRET)?|FAKE[-_]?(KEY|TOKEN|SECRET)?|SAMPLE[-_]?(KEY|TOKEN|SECRET))\b'''
and add the missing ? for the SAMPLE suffix group.
- Line 56: The regex in the angle-bracket allowlist uses Unicode property
escapes (\p{Han}\p{Hiragana}\p{Katakana}) which Go's regexp engine doesn't
support; replace those property classes in the pattern string
'''<[A-Za-z\p{Han}\p{Hiragana}\p{Katakana}][^>]{1,60}>''' with explicit Unicode
escape ranges for Hiragana, Katakana and Han (e.g., use \u3040-\u309F,
\u30A0-\u30FF, \u4E00-\u9FFF) so the pattern compiles and matches the intended
characters in Betterleaks' Go regex engine.