* added makefile and poetry dependency file

* added initial pdf_to_text script

* added initial readme

* smaller heading

Disable strategy #2 (guessed MIME-type) and strategy #3 (filename
extension) and verify that a caller that asserts the correct MIME-type
as the `content_type` argument gets the right `FileType` member.

Add a parameterized test for strategy #2 (guessed MIME-type) that
disables strategies #1 and #3 so we know what's actually being tested.
Remove individual tests made redundant by the single parameterized test.

Disable strategy #2 (guessed MIME-type) and strategy #3 (filename
extension) and verify that a caller that asserts the correct MIME-type
as the `content_type` argument gets the right `FileType` member.

Add a parameterized test for strategy #2 (guessed MIME-type) that
disables strategies #1 and #3 so we know what's actually being tested.
Remove individual tests made redundant by the single parameterized test.

Disable strategy #2 (guessed MIME-type) and strategy #3 (filename
extension) and verify that a caller that asserts the correct MIME-type
as the `content_type` argument gets the right `FileType` member.

Add a parameterized test for strategy #2 (guessed MIME-type) that
disables strategies #1 and #3 so we know what's actually being tested.
Remove individual tests made redundant by the single parameterized test.

Disable strategy #2 (guessed MIME-type) and strategy #3 (filename
extension) and verify that a caller that asserts the correct MIME-type
as the `content_type` argument gets the right `FileType` member.

Add a parameterized test for strategy #2 (guessed MIME-type) that
disables strategies #1 and #3 so we know what's actually being tested.
Remove individual tests made redundant by the single parameterized test.

…#4266)

## Problem

`_patch_current_chars_with_render_mode` is called on every
`do_TJ`/`do_Tj` text operator during PDF parsing. The original
implementation re-scans the entire `cur_item._objs` list each time,
checking `hasattr(item, "rendermode")` to skip already-patched items.
For a page with N characters across M text operations, this is O(N*M) —
effectively quadratic.

Memray profiling showed this function as the #1 allocator: 17.57 GB
total across 549M allocations in a session processing just 4 files.

## Fix

Track the last-patched index so each call only processes newly-added
`LTChar` objects. Reset automatically when `cur_item` changes (new page
or figure).

**Before:** O(N²) per page — re-scans all accumulated objects on every
text operator
**After:** O(N) per page — each object visited exactly once

---------

Co-authored-by: codeflash-ai[bot] <148906541+codeflash-ai[bot]@users.noreply.github.com>
Co-authored-by: Alan Bertl <[email protected]>