chore: remove tracked __pycache__, deduplicate deps, fix pyproject description

[Copilot]

Three repository hygiene issues: committed bytecode cache, duplicate dependency entry, and placeholder project description.

Changes

• __pycache__/: Removed 3 tracked .pyc files (dataset, model, utils) via git rm --cached
• .gitignore: Tightened pattern from bare __pycache__ to __pycache__/ + **/__pycache__/ to cover all directory depths
• pyproject.toml:
  • Description: "Add your description here" → "A library for time-series foundational models"
  • Removed duplicate datasets>=3.2.0 entry (appeared at lines 10 and 23)

Original prompt

Create a pull request in repository AdityaLab/Samay to address repository hygiene and packaging metadata issues while keeping the existing dependencies in the base install.

Goals:

1. Remove any tracked Python bytecode cache directories (e.g., __pycache__/) from the repository. Ensure they are not tracked going forward.

   • Delete the committed __pycache__/ directory currently at the repository root (and any others if present).
   • Confirm .gitignore ignores __pycache__ directories robustly. If needed, update .gitignore to include __pycache__/ and **/__pycache__/.

2. Improve pyproject.toml metadata and dependency hygiene without moving dependencies to optional extras.

   • Replace the placeholder project description with a meaningful description aligned with the repository purpose (time-series foundational models library).
   • Remove duplicate dependencies (currently datasets>=3.2.0 appears twice).
   • Keep all other existing dependencies in [project].dependencies (do not split into extras).

Constraints:

• Do not change dependency set other than deduplicating exact duplicates.
• Keep package list under [tool.hatch.build.targets.wheel] as-is unless necessary.

Acceptance criteria:

• git status shows no __pycache__ tracked after changes.
• .gitignore contains clear patterns to ignore __pycache__.
• pyproject.toml has non-placeholder description and no duplicate datasets entry.
• PR includes a concise description of changes and rationale.

This pull request was created from Copilot chat.

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.

[kage08]

LGTM