:sig
DValue regex_search_all(String pattern, String subject)
DValue regex_search_all(String pattern, String subject, String flags)

:params
pattern : PCRE2 regular expression pattern
subject : string to search
flags : optional regex flags
return value : a DValue containing all non-overlapping matches

:see
>regex
regex_match
regex_search
regex_replace
regex_split
0_DValue

:content
Finds every non-overlapping match of `pattern` in `subject`.

Example:

```uce
DValue tags = regex_search_all("#(?<tag>[A-Za-z0-9_]+)", "Ship #uce and #docs");

tags["matches"].each([](DValue match, String key) {
	print(match["named"]["tag"].to_string(), "\n");
});
```

Return shape:

- `matched` is `true` when at least one match exists.
- `count` is the number of matches.
- `matches` is a list of entries with the same shape returned by `regex_search()`.
- `pattern` and `flags` mirror the call inputs.

Zero-length matches are handled safely; the scanner advances after each zero-length match to avoid infinite loops.