feat(time-series): add TS.READ cursor read command

[nkaradzhov]

This pull request adds client support for the RedisTimeSeries TS.READ command (since 8.10.0), a read-only, single-key cursor reader that returns a batch of (timestamp, value) samples with timestamp at or after a cursor, in ascending order. With the optional BLOCK group it waits until at least minCount qualifying samples exist or a timeout elapses, enabling continuous batch consumption of historical and newly appended samples without polling TS.RANGE.

Wire shape: TS.READ key timestamp [BLOCK milliseconds min_count] [MAX_COUNT max_count]. The timestamp cursor accepts a non-negative integer or one of the sentinels -/+/$ (exposed as TS_READ_TIMESTAMP). The BLOCK group is all-or-nothing; minCount may be omitted in the typed API (defaults to 1) but is always emitted on the wire. Replies reuse the existing TS.RANGE sample parser (RESP2/RESP3).

Behavior considerations:

• Command is marked read-only and is not cacheable (server declares dont_cache); cluster clients route by the key's hash slot.
• Blocking connection handling is the caller's responsibility, consistent with existing blocking commands (e.g. BLPOP); the command object carries no blocking flag. Callers opting into BLOCK should run it on an isolated connection.
• An empty reply is a successful result (nothing qualifies, timeout, or key removal) — no automatic retry.

🤖 Generated with Claude Code

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Note

Low Risk
Additive read-only command following existing TS command patterns; blocking behavior is opt-in and documented like other blocking Redis commands.

Overview
Adds client support for RedisTimeSeries TS.READ (Redis 8.10+): a read-only, single-key cursor read that returns ascending (timestamp, value) batches from an inclusive cursor, with optional BLOCK / MAX_COUNT.

The new command wires TS.READ key timestamp [BLOCK ms min_count] [MAX_COUNT n], exposes cursor sentinels as TS_READ_TIMESTAMP (-, +, $), defaults minCount to 1 when BLOCK is set, and parses replies via the existing range sample transformers. client.ts.read / READ are registered on the time-series module and TsReadTimestamp, TsReadOptions, and TS_READ_TIMESTAMP are exported from the package entry.

Tests cover argument encoding and integration behavior (including sentinels, MAX_COUNT, missing keys, and BLOCK sync/timeout cases) behind minimumDockerVersion: [8, 10].

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