add get_stakers btc and strk delegations flow

[arad-starkware]

This change is 

---

Note

Adds a new test verifying get_stakers weighting with STRK and BTC delegations across multiple stakers, plus minor test utils/import updates and a small docs tweak.

• Tests:
  • Add get_stakers_delegation_flow_test in flow_test/test.cairo validating get_stakers with 4 stakers and both STRK/BTC delegations; computes expected weights via STRK_WEIGHT_FACTOR, BTC_WEIGHT_FACTOR, and mul_wide_and_div and asserts results.
• Docs:
  • Tweak flow_test/flow_ideas.md under get_stakers list.

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[arad-starkware]

• test: add get_stakers 100% power test #34
• test: add get_stakers switch flow #33
• test: add get_stakers increase stake flow #32
• test: add get_stakers enable disable tokens flow #31
• test: add get stakers delegation undelegation flow #30
• add get_stakers btc and strk delegations flow #29 👈 (View in Graphite)
• test: add get_stakers exit action flow #28
• test: add get_stakers exit intent flow #27
• test: add get_stakers with zero balance flow #26
• main

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[noa-starkware]

Reviewable status: 0 of 2 files reviewed, 1 unresolved discussion (waiting on @arad-starkware)

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workspace/apps/staking/contracts/src/flow_test/test.cairo line 2002 at r1 (raw file):

/// FLow:
/// Staker 1 stake
/// Staker 2 stake

Why do we need 2 stakers? Lets add a check of staker with both delegated strk and delegated btc

[arad-starkware]

Reviewable status: 0 of 2 files reviewed, 1 unresolved discussion (waiting on @arad-starkware and @noa-starkware)

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workspace/apps/staking/contracts/src/flow_test/test.cairo line 2002 at r1 (raw file):

Previously, noa-starkware wrote…

Why do we need 2 stakers? Lets add a check of staker with both delegated strk and delegated btc

With one staker the STRK pool won't change anything in the staking power, since he'd still have all of it. Maybe have one staker with both pools and one with none?

[noa-starkware]

Reviewable status: 0 of 2 files reviewed, 1 unresolved discussion (waiting on @arad-starkware)

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workspace/apps/staking/contracts/src/flow_test/test.cairo line 2002 at r1 (raw file):

Previously, arad-starkware wrote…

With one staker the STRK pool won't change anything in the staking power, since he'd still have all of it. Maybe have one staker with both pools and one with none?

talked f2f

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.43%. Comparing base (0d4c1ff) to head (59470a4).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #29      +/-   ##
==========================================
- Coverage   95.74%   95.43%   -0.31%     
==========================================
  Files          47       45       -2     
  Lines       11159     9446    -1713     
==========================================
- Hits        10684     9015    -1669     
+ Misses        475      431      -44     

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[arad-starkware]

Reviewable status: 0 of 2 files reviewed, 1 unresolved discussion (waiting on @noa-starkware)

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workspace/apps/staking/contracts/src/flow_test/test.cairo line 2002 at r1 (raw file):

Previously, noa-starkware wrote…

talked f2f

Done.

[noa-starkware]

Reviewable status: 0 of 2 files reviewed, 1 unresolved discussion (waiting on @arad-starkware)

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workspace/apps/staking/contracts/src/flow_test/test.cairo line 2093 at r3 (raw file):

        (staker_4.staker.address, staker_without_strk_delegation_staking_power, Option::None),
    ]
        .span();

test the sum of all the 4 is 100%?

[arad-starkware]

Reviewable status: 0 of 2 files reviewed, 1 unresolved discussion (waiting on @noa-starkware)

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workspace/apps/staking/contracts/src/flow_test/test.cairo line 2093 at r3 (raw file):

Previously, noa-starkware wrote…

test the sum of all the 4 is 100%?

https://reviewable.io/reviews/starkware-libs/starknet-staking/34

[noa-starkware]

Reviewable status: 0 of 2 files reviewed, all discussions resolved (waiting on @arad-starkware)