feat: PDF compile + preview + debug button

feat(debug): add 'Test last pipeline zip' to compile most recent runs/*/output.zip with local fonts + template precedence; widen TEXINPUTS

fix(debug): expand TEXINPUTS to include project + parent (recursive); copy template *.sty next to tex; stronger local-font overrides

build(debug): ensure TEXINPUTS points to project; copy template *.sty into zip project; use local fonts via overrides; should resolve Raleway fontspec error

feat(debug): copy repo fonts into zip project and append font overrides so theme uses ./fonts; fix DejaVu fallback issue

fix(fonts): add font fallbacks in template; patch theme file inside uploaded/repo zip during debug compile when needed

feat(debug): add UI to compile repo output.zip and uploaded zip; connect handlers (no binary files)

feat(runtime): download tectonic on-the-fly into runs/_bin when not found; use for both poster and debug compiles

feat(tectonic): robust detection of binary in common paths + keep python -m fallback; simplify postBuild; avoid pip tectonic

fix: correct conditional chain and add python -m tectonic fallback for both compile functions

fix(python): avoid backslashes inside f-string expressions in debug_compile HTML

feat(debug): add debug_compile function for PDF test + new tab preview

feat(space): PDF compile + preview + debug; runtime to gradio; packages.txt with tectonic

fix

fix

fix

optimize layout

optimize layout

Migrate Paper2Poster code