Remove mutable state from Vortex open options

[onursatici]

Rationale for this change

Vortex open options shouldn't have mutable state, so return the mutable state separately

[github-actions]

Polar Signals Profiling Results

Latest Run

Status	Commit	Job	Attempt	Link
🟢 Done	c0086e5		1	Explore Profiling Data

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[github-actions]

Benchmarks: Vortex queries 📖

Verdict: No clear signal (low confidence)
Attributed Vortex impact: -3.5%
Engines: DataFusion No clear signal (+5.8%, low confidence) · DuckDB Likely improvement (-11.9%, high confidence)
Vortex (geomean): 0.871x ✅
Parquet (geomean): 0.887x ✅
Shifts: Parquet (control) -11.3% · Median polish -14.4%

How to read Verdict and Engines

• Verdict: Overall PR-level signal after subtracting baseline drift estimated from Parquet control rows. It can be Likely improvement, Likely regression, or No clear signal.
• Engines: Per-engine attribution. DataFusion is compared against DataFusion/Parquet controls; DuckDB is compared against DuckDB/Parquet controls. This answers whether each engine improved or regressed independently.
• Confidence: Based on directional consistency, share of rows above the noise floor, and control-run noise.

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datafusion / vortex-file-compressed (0.876x ✅, 2↑ 0↓)

name	PR c0086e5 (ns)	base ba4acb6 (ns)	ratio (PR/base)
vortex_q00/datafusion:vortex-file-compressed 🚀	9636645	10798352	0.89
vortex_q01/datafusion:vortex-file-compressed 🚀	6234471	7243681	0.86

datafusion / parquet (0.828x ✅, 2↑ 0↓)

name	PR c0086e5 (ns)	base ba4acb6 (ns)	ratio (PR/base)
vortex_q00/datafusion:parquet 🚀	19753295	23278380	0.85
vortex_q01/datafusion:parquet 🚀	4606822	5695818	0.81

duckdb / vortex-file-compressed (0.837x ✅, 2↑ 0↓)

name	PR c0086e5 (ns)	base ba4acb6 (ns)	ratio (PR/base)
vortex_q00/duckdb:vortex-file-compressed 🚀	10041909	11992591	0.84
vortex_q01/duckdb:vortex-file-compressed 🚀	5940001	7107676	0.84

duckdb / parquet (0.950x ➖, 0↑ 0↓)

name	PR c0086e5 (ns)	base ba4acb6 (ns)	ratio (PR/base)
vortex_q00/duckdb:parquet	23492335	24784372	0.95
vortex_q01/duckdb:parquet	9469790	9953358	0.95

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No file size changes detected.