Bug: "Missing GitHub regex" warning due to incorrect dot escaping in regex patterns

[Tellsanguis]

Description: PatchPanda currently triggers a Missing GitHub regex warning even when a regex is correctly configured. This appears to be caused by the validation logic failing when the dot character . is used literally instead of being escaped as ..

Observed Examples:

Service: changedetection

    Detected Version: 0.52.9

    Configured Regex: ^\d+.\d+.\d+$

Service: ClipCascade

    Detected Version: 22.04

    Configured Regex: ^\d+.\d+$

The Problem: In standard regex, the . character matches any character. To strictly match a semantic version (where the dot is a literal separator), it should be escaped (.). However, PatchPanda seems to misinterpret these patterns or mark them as "missing" because they don't follow a specific internal strict format, leading to false-positive warnings.

Suggested Fix: The engine should correctly validate patterns where . is used for versioning or explicitly suggest/require the escaped . format without dropping the regex status to "Missing".

[dkorecko]

Hey, a normal regex and github regex are two different things. A missing github regex happens either when there's also a missing GitHub URL or we have the correct URL, but the versioning on the releases there could not be inferred.

[BadFlo]

I have the same issue with my container from https://github.com/dgtlmoon/changedetection.io
When I go to edit the override, it works, even after a forced check for update. Then it fails at the first "Recheck containers".
Maybe some miss-used label is causing the issue ?

org.opencontainers.image.created = 2026-03-17T10:54:00Z
org.opencontainers.image.description = Website, webpage change detection, monitoring and notifications.
org.opencontainers.image.documentation = https://changedetection.io
org.opencontainers.image.licenses = Apache-2.0
org.opencontainers.image.revision = 0da8dfb09a0c4165a4cef1f077159c15ba564135
org.opencontainers.image.source = https://github.com/dgtlmoon/changedetection.io
org.opencontainers.image.title = changedetection.io
org.opencontainers.image.url = https://changedetection.io
org.opencontainers.image.vendor = changedetection.io
org.opencontainers.image.version = 0.54.6

[dkorecko]

Ah, I misunderstood. See the issue now, will be fixed with #133.

Also, the issue where the override gets messed up will be fixed with #132