Issue #332 is duplicate of #312; add missing InvalidSeedException handler in ToolsCalcFinalWordDoneView

[Copilot]

Description

Issue #332 (System Error on 24-word seed entry) is confirmed as a duplicate of #312 (mnemonic wordlist consistency). The user was running the SeSi-0.8.6+ShSi-B8 image, which predates the fix in 15cc5150.

While auditing all convert_pending_mnemonic_to_pending_seed() call sites, ToolsCalcFinalWordDoneView.run() was the only one missing a try/except InvalidSeedException handler. All other call sites properly catch and redirect to SeedMnemonicInvalidView. Added the missing handler for consistency:

from seedsigner.models.seed import InvalidSeedException
from seedsigner.views.seed_views import SeedMnemonicInvalidView
try:
    self.controller.storage.convert_pending_mnemonic_to_pending_seed(
        wordlist_language_code=self.settings.get_value(SettingsConstants.SETTING__WORDLIST_LANGUAGE),
    )
except InvalidSeedException:
    return Destination(SeedMnemonicInvalidView)

No screenshots — no UI changes; only exception handling added to an existing code path.

This pull request is categorized as a:

• New feature
• Bug fix
• Code refactor
• Documentation
• Other

Checklist

• I've run pytest and made sure all unit tests pass before sumbitting the PR

If you modified or added functionality/workflow, did you add new unit tests?

• No, I'm a fool
• Yes
• N/A

I have tested this PR on the following platforms/os:

• Raspberry Pi OS Manual Build
• SeedSigner OS on a Pi0/Pi0W board
• Other

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.