[dajiaohuang]

Problem and minimal correction

Fix the reader-contract errors described in #381: close the migration shell fence; point VanillaGAN navigation and CWGAN-GP snippets to their existing tracked targets; use the renamed distribution in FAQ/UI/GX installation instructions; restore the UI example link; align the FAQ Python bound with setup.py.

No feature additions, stylistic cleanup, model changes or replacement links based on transient availability. The installation-guide file is deliberately untouched because #365 already edits it. The independent package-initializer failure is handled separately in #380.

Validation

• Base fails the fence-balance, VanillaGAN target, CWGAN-GP snippet and install/import consistency checks; corrected text passes.
• Every quoted Markdown navigation target resolves to a tracked native document; the CWGAN-GP and UI example targets exist; Python bounds agree with current setup.py.
• Full MkDocs build, dependency installation and TensorFlow/UI/model execution were not run locally. No external datasets, cloud services or training were used. Historical external URLs were not deleted on availability assumptions.

Fixes #381.