feat(vector): define indicator program v1

[vntrevx]

Defines the generic typed causal indicator-program-v1 contract for M20-02.

• Compiles source-derived arithmetic, comparison, condition, TA-Lib, rolling, shift, EWM, helper, and informative-merge nodes.
• Preserves source maps, ownership, deterministic fingerprints, and causal lookback.
• Fails closed on lookahead-capable or unsupported constructs; no strategy, Signal, pair, SHA, or expected-result opcodes.
• Adds schema validation, CLI documentation, a bounded contract strategy, and identity/mutation/failure tests.

Validation:

• Python: 729 passed
• Rust: 145 passed; fmt and Clippy clean
• Ruff and basedpyright clean
• Spot and Futures trade surface plus full state exact

The latest X7 full-source compile remains outside this task and stops at the next generic configuration-read gap; no Full Native claim is made.

[chatgpt-codex-connector]

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