v0.15.0

What's Changed

• fix: setuptools 82.0.1 → 83.0.0 in the build lock (PYSEC-2026-3447) by @utyagi24 in #144
• docs: make the audit a release gate, and PR-merge an explicit step by @utyagi24 in #145
• M61: unified content-draw engine (stamps, signatures, watermarks) by @utyagi24 in #146
• M62: stamp, signature & watermark placement UI by @utyagi24 in #147
• M63: image stamp / signature (white-background removal, recent list) by @utyagi24 in #148
• M64: search & redact (review panel, case/whole-word, batched) by @utyagi24 in #149
• M66: foreign-annotation infrastructure + delete by @utyagi24 in #150
• M67: move foreign marks (appearance preserved verbatim) by @utyagi24 in #151
• M68: adopt-on-edit (modeled types, precise degrade warning) by @utyagi24 in #152
• M69: form-field creation (text, checkbox, dropdown) by @utyagi24 in #153
• M69.1: R4 stamp polish — rotation, object menu, font size, sticky style by @utyagi24 in #154
• M69.2–M69.3: watermark fixes, then stamp + watermark merged into one feature by @utyagi24 in #155
• M70: v0.15.0 "Stamp, Sign & Watermark" — version bump + docs by @utyagi24 in #156

Full Changelog: v0.14.0...v0.15.0