Add tool annotations to server-time (2 tools, 0 annotated)

[olaservo]

Request: Add tool annotations — @modelcontextprotocol/server-time

Context

The time server currently provides zero annotations on its 2 tools. Both tools are pure read-only computations with no side effects. For reference, @modelcontextprotocol/server-filesystem annotates all 14 of its tools. We're requesting the same treatment here.

Current state — 0/2 tools annotated

#	Tool	readOnlyHint	destructiveHint	idempotentHint	openWorldHint
1	get_current_time	—	—	—	—
2	convert_time	—	—	—	—

Suggested annotations

#	Tool	readOnlyHint	destructiveHint	idempotentHint	openWorldHint
1	get_current_time	true	false	true	false
2	convert_time	true	false	true	false

Rationale

get_current_time → readOnlyHint: true, idempotentHint: true, openWorldHint: false
Returns the current time in a specified IANA timezone. Pure read from the system clock. No state mutation, no external calls.

convert_time → readOnlyHint: true, idempotentHint: true, openWorldHint: false
Converts a time between IANA timezones. Pure computation with no side effects, no state, no external calls.

Impact

This is the simplest annotation addition across all reference servers — ~10 lines of metadata across 2 tool registrations. Both tools are unambiguously read-only. No behavior changes. Completing this brings the time server in line with the filesystem server's annotation coverage.