feat(vector): implement exact NFI indicator kernels

[vntrevx]

Intent

Complete M20-04 with operation-driven Native kernels for every indicator reachable from latest NFI X7 e857f9b6.

What changed

• exact TA-Lib 0.6.4 kernels for 19 operations and 56 reachable parameter variants
• exact pandas 3.0.3 rolling mean/sum/min/max for 24 inventoried variants
• bounded state that remains bit-exact across arbitrary record-batch splits
• generic TA-Lib tuple/subscript output lowering without Signal, strategy, pair, SHA, or result branches
• reproducible 2,200-row official Python/TA-Lib/pandas oracle

Validation

• Python: 732 passed
• compatibility automation: 134 passed
• Rust workspace: 195 passed
• rustfmt and Clippy: clean
• Spot full fixture: trade surface and full state exact
• Futures full fixture: trade surface and full state exact
• Oracle: all 80 cases column exact; no tolerance

Claim boundary

All latest-NFI-reachable indicator kernels are exact. The whole latest X7 source still fails closed at strategy.py:3168:21 on informative/config attribute lowering, which remains M20-05 work; this PR does not claim full latest-strategy Native execution.

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