Fix encoded statistical model detail links

[codoom1]

What changed

• Decode model names that remain URL-encoded after Flask processes the path.
• Apply normalization consistently to model details, interpretation guides, and interpretation downloads.
• Reuse the same path-decoding helper for model-group routes.
• Add regression coverage for double-encoded model URLs.

Root cause

Some deployed links arrive double-encoded. Flask decodes the path once, leaving a lookup value such as Linear%20Regression instead of the model database key Linear Regression, which caused the site to render “Model not found.”

Impact

Model detail pages and their interpretation/download actions now resolve correctly for both ordinary and previously double-encoded links.

Validation

• python -m pytest -q tests/ — 118 passed
• Focused main-route tests — 22 passed
• Strict Python undefined-name/syntax lint — passed
• git diff --check — passed

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Project	Deployment	Actions	Updated (UTC)
statistical-model-suggester	Ready	Preview, Comment	Jul 24, 2026 10:44pm

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