[PHP] Keep pulled deletions within selected paths

[adamziel]

Pulled remote deletions now stop at the active include, exclude, and remap boundaries.

For example, when /var/www/html is remapped to site and that whole remote tree disappears, the sparse index can identify /var as the first absent parent. Pull now stops at /var/www/html and removes site instead of mapping /var to an unrelated local path. An excluded descendant or a separate remap target also keeps a broader parent from being deleted.

FileSyncPatchPlanner and files-pull now use the same sparse-index deletion rule. When a former empty-directory entry is replaced by a descendant, pull removes the stale index entry without removing the directory.

Testing

The focused tests cover nested includes, excluded descendants, complete remapped-tree deletion, overlapping local remap targets, and an empty directory becoming non-empty.

[github-actions]

Pull pipeline performance — large-directory

Site: large-directory · 2,000+ plus targeted file-transfer scenarios files · 10,000 posts · 25,000 postmeta · PHP 8.5.9

Stage	PR	trunk	Δ	Status	Details
playground-sqlite-db-pull	9.45 s	9.41 s	⚪ +43 ms (+0.5%)	✓	condition=db-pull in PHP.wasm runtime=php.wasm 8.3 wp_mysql_parser=enabled mode=lexer native_lexer=verified native_token_stream=WP_MySQL_Native_Token_Stream native_token_count=18 native_parser=selected trunk: condition=db-pull in PHP.wasm runtime=php.wasm 8.3 wp_mysql_parser=enabled mode=lexer native_lexer=verified native_token_stream=WP_MySQL_Native_Token_Stream native_token_count=18 native_parser=selected
playground-sqlite-db-apply	3.65 s	3.62 s	⚪ +25 ms (+0.7%)	✓	condition=db-apply to SQLite in PHP.wasm runtime=php.wasm 8.3 wp_mysql_parser=enabled mode=parser native_lexer=verified native_token_stream=WP_MySQL_Native_Token_Stream native_token_count=18 native_parser=verified native_ast=WP_MySQL_Native_Parser_Node sqlite_driver_parser=verified trunk: condition=db-apply to SQLite in PHP.wasm runtime=php.wasm 8.3 wp_mysql_parser=enabled mode=parser native_lexer=verified native_token_stream=WP_MySQL_Native_Token_Stream native_token_count=18 native_parser=verified native_ast=WP_MySQL_Native_Parser_Node sqlite_driver_parser=verified
Total	13.10 s	13.03 s	⚪ +68 ms (+0.5%)

_{Numbers carry runner noise; treat single-run deltas as directional, not authoritative.}

_{📈 Trunk performance history — commit-by-commit timeline.}

[adamziel]

Superseded by a single minimal PR based directly on trunk.