Add tests for AbstractDummyFilter and HypersphericalDummyFilter

[Copilot]

The previous session added AbstractDummyFilter and HypersphericalDummyFilter but was interrupted before tests were written.

Changes

• New test file pyrecest/tests/filters/test_hyperspherical_dummy_filter.py with 13 tests covering:
  • Correct dim for S² and S³
  • AssertionError on dim < 2
  • Initial filter_state is HypersphericalUniformDistribution
  • get_point_estimate() returns a unit-norm vector of the correct embedding dimension
  • predict_identity, predict_nonlinear, update_identity, update_nonlinear are all no-ops (state unchanged)
  • filter_state setter and set_state() are no-ops
  • get_estimate() returns the distribution object

[github-actions]

✅MegaLinter analysis: Success

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✅ REPOSITORY	secretlint	yes		no	no	5.89s
✅ REPOSITORY	syft	yes		no	no	3.45s
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✅ YAML	prettier	4	0	0	0	0.51s
✅ YAML	v8r	4		0	0	5.66s
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[FlorianPfaff]

@copilot fix the errors

[github-actions]

Test Results

   12 files  ±  0     12 suites  ±0   3h 19m 16s ⏱️ + 13m 3s
  546 tests + 13    546 ✅ + 13      0 💤 ±0  0 ❌ ±0 
6 764 runs  +156  5 588 ✅ +156  1 176 💤 ±0  0 ❌ ±0 

Results for commit 1db7bb3. ± Comparison against base commit f5c0f75.

♻️ This comment has been updated with latest results.

[Copilot]

@copilot fix the errors

Fixed in commit 1db7bb3:

• abstract_dummy_filter.py: Added explicit __init__, changed predict_nonlinear(self, f, noise_distribution=None, *args) → predict_nonlinear(self, f, *args, **kwargs) to resolve keyword-arg-before-vararg
• hyperspherical_dummy_filter.py: Now calls AbstractDummyFilter.__init__ (direct parent) instead of AbstractFilter.__init__, resolving non-parent-init-called; removed the now-unused AbstractFilter import

Pylint rates both files 10.00/10 and all 13 tests still pass.