refactor(cli): Replace tracing-indicatif with shared MultiProgress

tracing-indicatif pulled in vt100, arrayvec, and its own indicatif
integration layer. Replace it with a minimal SuspendingWriter that
coordinates tracing output with progress bars via a global LazyLock
MultiProgress.

- Add src/cli/progress.rs: shared MultiProgress singleton via LazyLock
  and a SuspendingWriter that suspends bars before writing log lines,
  preventing interleaving/flicker
- Wire all progress bar creation through multi().add() in sync and
  ingest commands
- Replace IndicatifLayer in main.rs with SuspendingWriter for
  tracing-subscriber's fmt layer
- Remove tracing-indicatif from Cargo.toml (drops vt100 and arrayvec
  transitive deps)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/cli/mod.rs

@@ -1,6 +1,7 @@
 //! CLI module with clap command definitions.
 
 pub mod commands;
+pub mod progress;
 
 use clap::{Parser, Subcommand};
 use std::io::IsTerminal;