fix: remove hard-coded paths and patch overrides

[noahgift]

Summary

• Remove path = \"../../../probar/crates/probar\" local path override from crates/ttop/Cargo.toml dev-dependency on jugar-probar — now resolves from crates.io (v1.0.1)
• Remove all /mnt/nvme-raid0 hard-coded path strings from crates/ttop/src/panels.rs test assertions, comments, and the mount_marker() function logic — replaced with generic /mnt/nvme paths
• Update doc comment in crates/ttop/src/analyzers/treemap.rs to remove machine-specific path reference

These changes break clean-room CI builds because the local path = override requires the probar repo to be checked out on the CI machine, and the /mnt/nvme-raid0 prefix is specific to this development machine's NVMe RAID mount.

Spec: sovereign-stack-protected-branch-strategy.md (Section 5)

Test plan

• cargo check passes in /home/noah/src/trueno-viz (root workspace)
• cargo check passes in /home/noah/src/trueno-viz/crates/ttop (ttop crate, now resolves jugar-probar from crates.io)
• No remaining /mnt/nvme-raid0 references in any .rs files
• No remaining path = "../ in any Cargo.toml files

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