�� Rector and PHPCS fixes

SearchIndex: review fixes — auto-save MemoryIndex, cast TupleOps counts, style cleanups

- MemoryIndex: auto-save dirty data on unlock/destruction to prevent
silent index corruption when indexes ar

SearchIndex: review fixes — auto-save MemoryIndex, cast TupleOps counts, style cleanups

- MemoryIndex: auto-save dirty data on unlock/destruction to prevent
silent index corruption when indexes are used in tandem
- TupleOps::parseTuples(): cast exploded count strings to int
- FileIndex::retrieveRow(): document the write-on-read padding behavior
- Fix whitespace issues in ApiCore, common.php, Sitemap/Mapper
- Update concept.txt to reflect MemoryIndex auto-save behavior

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SearchIndex: add backward compatibility wrappers

Add deprecated wrappers for idx_* and ft_* functions that were removed
when inc/indexer.php and inc/fulltext.php were replaced by the new
Search clas

SearchIndex: add backward compatibility wrappers

Add deprecated wrappers for idx_* and ft_* functions that were removed
when inc/indexer.php and inc/fulltext.php were replaced by the new
Search classes. These wrappers delegate to the new architecture and
ensure existing plugins continue to work.

Deprecated standalone functions: idx_get_indexer, idx_getIndex,
idx_lookup, idx_listIndexLengths, idx_indexLengths, ft_pageSearch,
ft_backlinks, ft_mediause, ft_pageLookup, ft_snippet, ft_pagesorter,
ft_snippet_re_preprocess, ft_queryParser.

Deprecated methods on Indexer: lookupKey, getPages, addMetaKeys,
renameMetaValue, getPID, lookup.

Also migrates remaining core callers (Ajax, FeedCreator, ApiCore) to
use the new classes directly and fixes a UTF-8 case folding bug in
MetadataSearch title lookups.

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SearchIndex: rewrite MetadataSearch to use Collection classes

Replace MetadataIndex usage in MetadataSearch with the new Collection/Index
architecture. This completes the read-path migration so data

SearchIndex: rewrite MetadataSearch to use Collection classes

Replace MetadataIndex usage in MetadataSearch with the new Collection/Index
architecture. This completes the read-path migration so data written by the
Collection-based Indexer is read back correctly using TupleOps tuple format.

Generalize FrequencyCollectionSearch into CollectionSearch that works with any
AbstractCollection type (Frequency, Lookup, Direct) and handles both
split-by-length and non-split index layouts transparently. DirectCollection
participates via resolveTokenFrequencies() which maps token RID = entity RID.

Key changes:
- AbstractCollection gains isSplitByLength(), resolveTokenFrequencies(),
getEntitiesWithData(), and groupToSuffix() with validation
- Index groups are now int (0 = non-split, positive = token length)
- CollectionSearch provides both addTerm()/execute() for fulltext and
lookup() for metadata-style search (exact/wildcard/callback)
- MetadataSearch delegates entirely to collection APIs
- Shared filterPages() replaces duplicated page filtering logic
- All callers updated from MetadataIndex to MetadataSearch
- Tests moved to Search namespace with full coverage for new APIs

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SearchIndex: rewrite FulltextSearch to use FrequencyCollectionSearch

Replace FulltextIndex->lookupWords() with FrequencyCollectionSearch which
correctly handles the compact tuple format written by t

SearchIndex: rewrite FulltextSearch to use FrequencyCollectionSearch

Replace FulltextIndex->lookupWords() with FrequencyCollectionSearch which
correctly handles the compact tuple format written by the new Indexer.

Introduce QueryEvaluator with typed stack entries (PageSet,
NamespacePredicate, NegatedEntry) for RPN query evaluation. NOT wraps
its operand instead of computing a universe complement, so AND with a
negated operand becomes efficient set subtraction. The full page index
is only loaded for standalone negative or namespace-only queries.

Move QueryParser and QueryEvaluator into the new Search\Query namespace
along with the stack entry types.

Simplify FulltextSearch to orchestration: parse query, look up words,
evaluate, filter, sort. Replace FT_SNIPPET_NUMBER constant with
maxSnippets property. Combine ACL/existence/time filtering into a
single pass.

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SearchIndex: rewrite Indexer to use Collection classes

Replace the intermediate #2943 classes (FulltextIndex, MetadataIndex)
with the new Collection-based architecture. The Indexer is now a thin
sta

SearchIndex: rewrite Indexer to use Collection classes

Replace the intermediate #2943 classes (FulltextIndex, MetadataIndex)
with the new Collection-based architecture. The Indexer is now a thin
stateless orchestrator that delegates all index work to collections.

Key changes:
- Indexer no longer extends AbstractIndex; page name passed to methods
- addPage/deletePage/clear use PageTitleCollection,
PageFulltextCollection, and PageMetaCollection
- New PageMetaCollection replaces separate ReferencesCollection and
MediaCollection with a single class that handles arbitrary metadata
keys dynamically
- Shared writable FileIndex('page') passed to all collections
- Logger callback replaces verbose parameter
- Methods return void instead of bool
- Index classes implement IteratorAggregate for clean data access
- Indexer tests consolidated into namespaced IndexerTest.php
- All callers updated to new stateless API

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updated rector and applied it

removed another php 7.4 workaround

API doc block updates

increased API version

API: proper access to the current media revision

Even when the revision is explictly given instead of set to 0. See #4419
for ponderings about why this is necessary and a different approach.

Added API endpoint core.getMediaHistory #4147

squashed commits of #4369

fix legacy XMLRPC call dokuwiki.appendPage #4418

do not return zero error code for API exceptions. fixes #4413

init rendering correctly in API

When rendering a page, the ID should be passed.

Fix MD5 hash calculation

Fix mismatch between search_allpages (local) and core.listPages (XMLRPC) API call hash calculation.

increase API version for new call, remove unused parameter

remove obsolete TODO comment

added API core.getMediaUsage

API: ignore charset when checking content types

We still expect all communication to be in UTF-8, but we really don't
need a charset attribute for that.

fixes #4218, replaces #4219

API: legacy compatibility fix

wiki.getAllPages and dokuwiki.getPagelist differed in how the last
modification timestamp was communicated.

This should fix splitbrain/dokuwiki-plugin-sync#70

adjust group type hint for User API response

fix User response object in API

LegacyAPI: fix return types on missing pages

fix error handling in XMLRPC

response errors in call() need to be returned as Error not as thrown
Exception.