fix: clean up search sanitization

[Koan-Bot]

Summary

Cleans up the _sanitize_search function to address several issues: removes unnecessary single-quote escaping (was a no-op), removes silent newline stripping, adds + to the allowed character set, and strips disallowed characters instead of replacing them with . (a regex wildcard).

Closes #40

Changes

• Remove $s =~ s{'}{\'}g; — the escape was a no-op and quote escaping is unnecessary
• Remove $s =~ s{\n}{}g; — silent newline removal was unexpected behavior
• Add + to the allowed character whitelist
• Replace disallowed characters with empty string instead of .
• Update tests to reflect new stripping behavior and add + / newline test cases

Test plan

• prove -Isrc/lib src/t/GrepCpan-Grep-sanitize-search.t — all 12 tests pass
• prove -Isrc/lib src/t/GrepCpan-Grep-grep-flavor.t — passes (no regression)

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Generated by Kōan /implement

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Quality Report

Changes: 2 files changed, 6 insertions(+), 6 deletions(-)

Code scan: clean

Tests: failed (FAILED)

Branch hygiene: clean

Generated by Kōan post-mission quality pipeline

[Koan-Bot]

Quality Gate Warning

Tests failed: FAILED

Auto-merge was skipped due to quality gate issues.

[Koan-Bot]

Rebase: fix: clean up search sanitization

Branch koan.atoomic/implement-40 rebased onto master and force-pushed.

Diff: 3 files changed, 102 insertions(+), 6 deletions(-)

Review feedback was analyzed and applied.

Actions

• Rebased koan.atoomic/implement-40 onto origin/master
• Applied review feedback
• Force-pushed koan.atoomic/implement-40 to origin

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Automated by Kōan

[Koan-Bot]

Rebase: fix: clean up search sanitization

Branch koan.atoomic/implement-40 rebased onto master and force-pushed.

Diff: 3 files changed, 102 insertions(+), 6 deletions(-)

Review feedback was analyzed and applied.

Actions

• Rebased koan.atoomic/implement-40 onto origin/master
• Force-pushed koan.atoomic/implement-40 to origin

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Automated by Kōan

[atoomic]

@Koan-Bot rebase