test: find sigma - cover all branches with member from V0

[noa-starkware]

Note

Adds two flow tests covering delegator-from-V0 find-sigma scenarios (zero rewards and cross-version rewards) with corresponding MAINNET_LATEST tests.

• Flow tests:
  • New DelegatorV0FindSigmaZeroFlow: validates zero unclaimed/claimed rewards for delegator originating in V0 across epochs.
  • New DelegatorRewardsV0FindSigmaFlow: validates delegator rewards when accrued in V0 and V3, asserting view/claim consistency across epochs.
• Test suite:
  • Add delegator_v0_find_sigma_zero_flow_test and delegator_rewards_v0_find_sigma_flow_test in src/flow_test/fork_test.cairo (MAINNET_LATEST).
• Docs:
  • Tweak src/flow_test/flow_ideas.md (minor cleanup).

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This change is 

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.71%. Comparing base (a26081a) to head (a6a9e37).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #72   +/-   ##
=======================================
  Coverage   95.71%   95.71%           
=======================================
  Files          42       42           
  Lines        9959     9959           
=======================================
  Hits         9532     9532           
  Misses        427      427           

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[NirLevi-starkware]

@NirLevi-starkware reviewed 3 of 3 files at r2, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @noa-starkware)

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src/flow_test/flow_ideas.md line 37 at r2 (raw file):

- find sigma: Enter V0, change in V2, catch all ifs.
- find sigma_edge_cases: catch the comments.
- find sigma - cover all branches with member from V0, V1, V2(V2 DONE).

Why these tests down cover all branches with member?

[noa-starkware]

Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @NirLevi-starkware)

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src/flow_test/flow_ideas.md line 37 at r2 (raw file):

Previously, NirLevi-starkware (Nir Levi) wrote…

Why these tests down cover all branches with member?

Dont understand the question , lets talk in slack

[NirLevi-starkware]

Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @noa-starkware)

[NirLevi-starkware]

@NirLevi-starkware reviewed 3 of 3 files at r3, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @noa-starkware)