[SkyeAv]

First of three stacked PRs for ARS querying (this PR, then #65, then #66). This one updates the MCP server dependency and cleans up the adapter so the last PR can expose long-running ARS queries as protocol-native background tasks.

What changed

• fastmcp bumped from 2.12.2 to the 2.14 line (>=2.14.7, <3). 2.14 implements the MCP background task protocol (SEP-1686); 2.12 predates it.
• TCT/interfaces/mcp.py no longer imports the mcp package directly. Tool errors raise fastmcp.exceptions.ToolError, which FastMCP turns into a tool error result, and middleware typing uses fastmcp's own context types. The mcp package is still installed as a fastmcp dependency, but nothing in TCT imports it, and the existing test that runs the tool surface without MCP dependencies now also rejects direct mcp imports.
• All shared tools get MCP tool annotations (readOnlyHint, openWorldHint) so clients can tell which tools only read data.
• Tool names, signatures, schemas, and the unstructured output contract are unchanged; tests/test_mcp_contract.py passes without edits. TCT/server.py compatibility imports are unaffected.
• Verified in tests that an async task=True tool on a FastMCP instance registers task metadata and completes through task retrieval, and that the Progress dependency works in ordinary tools.
• Not in this PR: FastMCP 3.x/4.x migration, structured outputs, tags/icons, Redis task backend, HTTP transport.

Verification

• uv run pytest: 123 passed, 1 skipped (live tests gated). Includes the MCP contract tests.
• Two in-process fastmcp.Client smokes against live Translator services (name_lookup resolved asthma to MONDO:0004979, normalize_nodes returned the normalized node), both green on separate runs.
• Background-task smoke: call_tool(..., task=True) returns a task, task.result() carries the payload, get_task_status reports completed.

Stats (for audit)

• 3 commits, 4 files, +1116/-169 (most of the additions are the regenerated uv.lock).
• Offline suite: 123 passed, 1 skipped.
• Live smokes: 2 of 2 green (name_lookup, normalize_nodes through an in-process fastmcp.Client).