SearchIndex: extract Collection base class hierarchy

Introduce AbstractCollection as the shared base for all index
collections, with FrequencyCollection and LookupCollection as
the two abstract subc

SearchIndex: extract Collection base class hierarchy

Introduce AbstractCollection as the shared base for all index
collections, with FrequencyCollection and LookupCollection as
the two abstract subclasses differing only in how tokens are
counted (frequency vs dedup).

Key design decisions:
- splitByLength is a constructor parameter on AbstractCollection
controlling whether token/frequency indexes use length-based
file splitting. This is independent of the collection type.
- The reverse index format is self-describing: entries with *
have a group prefix (split), entries without don't (non-split).
No branching needed in parse/format methods.
- addEntity, resolveTokens, updateIndexes, and reverse index
handling all live in AbstractCollection. Subclasses only
implement countTokens().

Concrete collections: PageFulltextCollection (frequency, split),
MediaCollection and ReferencesCollection (lookup, non-split).

Renames FulltextCollection -> PageFulltextCollection and
FulltextCollectionSearch -> FrequencyCollectionSearch.

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ignore HTML validation issue with skipped headline levels

It's debatable if this is an error. I'd say it's more like a warning.

fix http tests

The response at httpbingo has changed, tests needed updates

updated tests for PHP 8.2

* now using DomWrapper 3.0 which removes a bunch of deprecation messages
* fixed class name throwing a warning
* fixed deprecated reflection use

TreeBuilder: skip invalid pages and namespaces

This will hide namespace templates or weird folders from listings.
Can be disabled with a flag if needed.

convert tests to data provider

add comment to the real-ip test

add custom client_ip_header

fix: 32bit IP tests w/string of decimal representation, overflows

Math in PHP is hard!
sprintf("%.0f",0x7FFFFFFFFFFFFFFF) == sprintf("%.0f",0x7FFFFFFFFFFFFF00)

Changes
* 32bit gets own version o

fix: 32bit IP tests w/string of decimal representation, overflows

Math in PHP is hard!
sprintf("%.0f",0x7FFFFFFFFFFFFFFF) == sprintf("%.0f",0x7FFFFFFFFFFFFF00)

Changes
* 32bit gets own version of tests where expected values are strings
* decimalToBinary32 to replace `sprintf("%032b%032b"...)`, avoids overflow
* overflow check in ipv4 too
* refactor
* partsTo64 for 32bit parts into dec value as str (bcmath)
* Ip32::$b32 as class constant
* condition always PHP_INT_SIZE == 4 for 32bit (instead of == 8 for 64)

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refactor(ip): PSR-12 functions

bitmask64_32 -> bitmask64On32
make_bitmask_32 -> makeBitmaskOn32
ipv6_upper_lower_32 -> ipv6UpperLowerOn32

also
* uncomment working 7FFF ipv6 test a

refactor(ip): PSR-12 functions

bitmask64_32 -> bitmask64On32
make_bitmask_32 -> makeBitmaskOn32
ipv6_upper_lower_32 -> ipv6UpperLowerOn32

also
* uncomment working 7FFF ipv6 test and
* fix README suggested podman to use `docker://wpstaging`

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updated fulltextCollectionTest for new tuple format

frequency of 1 is now written without a count

updated assertion

SearchIndex: more Term tests

SearchIndex: TupleOps now work with frequencies of 1

We have indexes where we simply track that a relation between entity and
token exists, but there is no frequency. The frequency is always 1.
For

SearchIndex: TupleOps now work with frequencies of 1

We have indexes where we simply track that a relation between entity and
token exists, but there is no frequency. The frequency is always 1.
For those indexes we do not store *1 as frequency but omit it
completely.

The TupleOps class now can work with such indexes and will also store
frequencies of 1 like this.

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refactor preference cookie handling. fixes #4544

This refactors the DOKU_PREF cookie handling on the PHP side into a
class. It makes encoding/decoding more explicit and easier to
understand.

The ne

refactor preference cookie handling. fixes #4544

This refactors the DOKU_PREF cookie handling on the PHP side into a
class. It makes encoding/decoding more explicit and easier to
understand.

The new class is used in set_doku_pref() and get_doku_pref() which have
not been deprecated for now.

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fix(inc/Ip): 32bit arch compatible range check

* added docs about running tests on 32bit w/ podman.
* Updated tests to use string instead of int for comparison when 32bit.
* added `make_bitmask_3

fix(inc/Ip): 32bit arch compatible range check

* added docs about running tests on 32bit w/ podman.
* Updated tests to use string instead of int for comparison when 32bit.
* added `make_bitmask_32` and `bitmask64_32`. updated `ipInRange` to
use them.

Test failing for `test_ip_to_number`
```
podman run -v $PWD/..:/dokuwiki \
--workdir /dokuwiki/_test -it \
docker://wpstaging/php:8.3-32bit \
./vendor/bin/phpunit --verbose --stderr --filter ip_test
```

```

1) ip_test::test_ip_to_number with data set #3 ('38AF:3033:AA39:CDE3:1A46:094C...D:5300', 6, 4.084536385505709E+18, 1.8932109165344407E+18)
Failed asserting that two strings are identical.
--- Expected
+++ Actual
@@ @@
-'4084536385505709056'
+'4084536381210742243'

/dokuwiki/_test/tests/inc/Ip.test.php:52

2) ip_test::test_ip_to_number with data set #5 ('193.53.125.7', 4, 0, 3241508103)
Failed asserting that -1053459193 is identical to 3241508103.

```

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extend tests, fix issues with new Ip methods

Add experimental tree builder classes

These classes provide mechanisms to build a traversable tree of pages
and links. Either from the existing namespace structure, or from a
control page containing

Add experimental tree builder classes

These classes provide mechanisms to build a traversable tree of pages
and links. Either from the existing namespace structure, or from a
control page containing (possibly a nested) set of links.

The nodes returned by the tree are deliberately sparse. No ACL checking
is taking place. Developers can enrich (or omit) nodes and influence
recursion decisions via callbacks.

The tree can optionally be sorted by comparators provided in the
TreeSort class or a custom callback.

The API provided by these classes is not considered stable yet and may
change over time. Plugin authors are encouraged to use them and provide
feedback.

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Added API endpoint core.getMediaHistory #4147

squashed commits of #4369

Fix Ip tests

We no longer use the old regexp based config, so the tests failed.

use renamed trustedproxies setting in tests

adjusted tests for new buildURLparams()

null values are no longer added as empty parameters.

allow to set unusable password

This could be used by plugins such as dokuwiki-plugin-oauth to create
accounts that can only by accessed via SSO.

use new expectLogMessage to check condition tested in test_savesequence4()

io_replaceInFile: replace warning with logging call