headroom/docs/plans
chopratejas 2292724ff7 Add dynamic anchor selection with content deduplication
Replace static "first 3 + last 2" preservation with intelligent anchor
selection that adapts to data patterns and array size.

Key changes:
- Add AnchorSelector class for dynamic position-based preservation
- Add AnchorConfig for configurable anchor allocation (budget ratio,
  strategy weights, information density scoring)
- Add content-based deduplication to prevent wasting slots on identical
  items using SHA256 hashing
- Add _fill_remaining_slots() to maximize output when dedup reduces items
- Support data pattern detection (TIME_SERIES, SEARCH_RESULTS, LOGS, GENERIC)
- Support query-aware anchor adjustment for back-heavy patterns

Enterprise hardening:
- Thread-safe: No shared state modified
- O(n) performance for dedup and slot filling
- Fault-tolerant serialization with fallbacks
- Configurable via dedup_identical_items flag

52 tests covering adversarial positions, size adaptation, pattern-aware
anchoring, query-aware selection, information density, coverage metrics,
edge cases, and preservation guarantees.
2026-01-21 00:19:05 -08:00
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dynamic-smart-crusher.md Add dynamic anchor selection with content deduplication 2026-01-21 00:19:05 -08:00