Allow verified-text restoration on tiled images

Tile the Qwen VAE donor the same way as the global pass. Glyph restore already runs on the blended full frame, so the old tile ban was an artificial gate.

src/remove_ai_watermarks/invisible_engine.py

@@ -186,8 +186,10 @@ class InvisibleEngine:
             text_manifest: Operator-verified text lines bound to the decoded source
                 pixels. Enables the experimental Qwen-VAE ``vae-glyphs`` post-pass.
                 Requires the ``text-restoration`` extra and the ``qwen-zimage``
-                profile. Incompatible with tiling, downscaling, humanize, unsharp,
-                and adaptive polish because those combinations are not calibrated.
+                profile. Incompatible with downscaling, humanize, unsharp, and
+                adaptive polish. Tiling is supported: the VAE donor uses the same
+                overlapping tiles as the global pass, then glyph restore runs on
+                the blended full frame.
             fidelity_anchor: Blend 15% of the Qwen-VAE donor across the whole frame
                 before glyph restoration. OFF by default since 0.27.1: that global
                 blend was measured to return detector-visible OpenAI SynthID on
@@ -211,8 +213,6 @@ class InvisibleEngine:
                 raise ValueError("--text-manifest is supported only by the qwen-zimage profile")
             if max_resolution != 0:
                 raise ValueError("--text-manifest requires --max-resolution 0")
-            if tile:
-                raise ValueError("--text-manifest is not calibrated with --tile")
             if humanize > 0.0 or unsharp > 0.0 or adaptive_polish:
                 raise ValueError("--text-manifest requires humanize=0, unsharp=0, and adaptive polish disabled")
             from remove_ai_watermarks import region_eraser