refactor out block ranges - rel 0.2.0-alpha.1

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [0.2.0-alpha.1] - 2026-03-26
+
+### Added
+
+- **Smart Client Sync Module** (`phaser-client`):
+  - `PhaserSyncer` orchestrator with parallel worker pool
+  - `BatchWriter` trait for pluggable storage backends
+  - `WriterFactory` trait for creating writers per data type
+  - Exponential backoff retry with `RetryPolicy` configuration
+  - Progress streaming via `subscribe_progress()` method
+  - Error categorization (transient vs permanent) for intelligent retry decisions
+  - Position-agnostic `Range` and `SegmentWork` types for any ordered data source
+
+- **Generic Position/Range Types**:
+  - Replaced EVM-specific `BlockRange` with generic `Range` type
+  - `SegmentWork` uses `HashMap<String, Vec<Range>>` for flexible data type tracking
+  - Supports any ordered data source (EVM blocks, Solana slots, Canton offsets)
+
+- **Proto Updates** (`phaser-query`):
+  - Added generic `Range` message (replaces `BlockRange`)
+  - Added `DataTypeRanges` for flexible missing range tracking
+  - Added `by_type` maps in `DataProgress` and `FileStatistics`
+  - Renamed `from_block`/`to_block` to `from_position`/`to_position`
+
+### Changed
+
+- `phaser-query` now uses `phaser-client::sync::SegmentWork` instead of local definition
+- Proto `IncompleteSegment` uses generic `missing_ranges` field (old fields deprecated)
+
+### Removed
+
+- **Dead code from `phaser-types`**:
+  - `BlockRange` struct (had unused `source: DataSource` field)
+  - `DataSource` enum (never instantiated)
+  - `DataAvailability` struct (never used)
+
+### Deprecated
+
+- Proto fields `missing_blocks_ranges`, `missing_transactions_ranges`, `missing_logs_ranges`
+  in `IncompleteSegment` (use `missing_ranges` instead)
+- Proto fields `blocks`, `transactions`, `logs` in `DataProgress` (use `by_type` instead)