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jedarden f85e5149dd feat(pdftract-91e1i): HTTP fetch sequence implementation 
Implement orchestration layer connecting HttpRangeSource to Phase 1.3
xref resolver and Phase 1.4 document model for remote PDF access:

- Document::open_remote() public API for remote PDF loading
- Progressive tail fetch (16 KB → 1 MB) for startxref location
- Xref forward-scan disabled for remote sources (via is_remote check)
- Page-by-page on-demand fetch via HttpRangeSource caching
- Resource lazy load through XrefResolver cache
- HEAD probe with 405 fallback, no Content-Length handling

Acceptance criteria:
✅ open_remote(url) returns Document with correct page count
✅ HEAD failure modes (405, no Content-Length, 401) handled
✅ xref forward-scan disabled for remote (is_remote check)
✅ Page-by-page on-demand fetch (HttpRangeSource LRU cache)
✅ INV-8 maintained (all errors return Result)

Files modified:
- crates/pdftract-core/src/document.rs (Document::open_remote, from_source)
- crates/pdftract-core/src/remote.rs (progressive tail fetch)
- crates/pdftract-core/src/lib.rs (re-exports)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-28 13:17:00 -04:00
..
ascii85_terminator.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
ascii85_terminator.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
ascii85_terminator.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
ascii85_z_shortcut.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
ascii85_z_shortcut.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
ascii85_z_shortcut.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
asciihex_odd_length.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
asciihex_odd_length.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
asciihex_odd_length.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
crypt_identity.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
crypt_identity.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
crypt_identity.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
dct_missing_eoi.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
dct_missing_eoi.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
dct_missing_eoi.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
dct_valid_jpeg.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
dct_valid_jpeg.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
dct_valid_jpeg.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
filter_array_a85_then_flate.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
filter_array_a85_then_flate.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
filter_array_a85_then_flate.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
flate_bomb_3gb.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
flate_bomb_3gb.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
flate_bomb_3gb.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
flate_png_pred15_all_six.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
flate_png_pred15_all_six.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
flate_png_pred15_all_six.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
flate_simple.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
flate_simple.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
flate_simple.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
flate_tiff_pred2.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
flate_tiff_pred2.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
flate_tiff_pred2.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
flate_truncated.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
flate_truncated.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
flate_truncated.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
gen_fixtures.py fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
gen_fixtures_corrected.py feat(pdftract-91e1i): HTTP fetch sequence implementation 2026-05-28 13:17:00 -04:00
gen_lzw.rs fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
jbig2_passthrough.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
jbig2_passthrough.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
jbig2_passthrough.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
lzw_early_change_0.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
lzw_early_change_0.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
lzw_early_change_0.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
lzw_early_change_1.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
lzw_early_change_1.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
lzw_early_change_1.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
runlength_basic.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
runlength_basic.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
runlength_basic.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
unknown_filter.bin fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
unknown_filter.expected fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00
unknown_filter.meta fix(pdftract-25igv): fix emit! macro usage in codespace parser 2026-05-28 07:29:33 -04:00