Agentic lakehouse: Hudi-aware agent skills and tools

### Task Description

**What needs to be done:**
Curated knowledge the agent loads about Hudi semantics (table layout, timeline, table services, query shaping) plus tools beyond SQL: table inspection/administration operations, incremental/change queries ("what changed since X"), and result visualization.

**Why this task is needed:**
Answer quality and operational usefulness come from Hudi-specific depth, not from the generic loop.

### Task Type
Other

### Related Issues
**Parent feature issue:** #19256

Start with the parent feature issue #19256; no implementation files, tests, or entry points are named here. Define the scope around Hudi table semantics, administration and inspection tools, incremental queries, and result visualization, with completion requiring all requested capabilities to support Hudi-specific agent answers and operations.

Written by the indexing model from the issue text.