Pixi pinning for 2026C2

[Thomas A Caswell (tacaswell)]

• Initial toml file
• Regenerate with current versions
• Add hdf5 plugins and standardize Python pinning
• update lockfile
• Update lock file
• update core pins
• regenerate lock
• Update versions
• Adding more third-party floors
• Update versions
• MNT: update ophyd-async and pull more from CF
• generate lock file
• Manage envs when lanuching terminal
• Update and regenerate lock
• MNT: change from deprecated section name
• Update pixi.toml for new packages
• BLD: update lock file
• Add pvxslibs
• Update pixi.toml for new packages
• ENH: switch ophyd-async for conda-forge
• MNT: ignore PYTHONPATH when launching terminal
• update bluesky and databroker pins
• regenerate lock
• REL: update pixi.toml for 2026C2 pinnings
• REL: update pixi.lock for 2026C2 pinnings