feat: Publish to crates.io and prepare PyPI publication

crates.io:

- Successfully published optimizr v1.0.0

- Available at: https://crates.io/crates/optimizr

PyPI Preparation:

- Renamed package to optimizr-rs (avoid name conflict)

- Updated pyproject.toml with new name

- Built wheel: optimizr_rs-1.0.0-cp38-abi3-macosx_10_12_x86_64.whl

- Ready for upload (need API token)

Documentation Updates:

- Updated RELEASE_NOTES with crates.io link

- Updated README.md installation instructions

- Updated LINKEDIN_POST.md with correct package names

- Created PYPI_PUBLISHING.md with token instructions

Next: Get PyPI API token and run twine upload

PYPI_PUBLISHING.md

@@ -0,0 +1,88 @@
+# PyPI Publishing Instructions
+
+## Current Status
+- ✅ Package built: `optimizr_rs-1.0.0-cp38-abi3-macosx_10_12_x86_64.whl`
+- ✅ Package name: `optimizr-rs` (to avoid conflict with existing "optimizr")
+- ❌ Need PyPI API token (username/password auth deprecated)
+
+## Steps to Publish
+
+### 1. Get PyPI API Token
+
+1. Login to PyPI: https://pypi.org/account/login/
+   - Username: `ThotDjehuty`
+   - Password: `G2p._468pfSH73G`
+
+2. Create API token: https://pypi.org/manage/account/token/
+   - Click "Add API token"
+   - Token name: `optimizr-rs-publishing`
+   - Scope: "Entire account" (can limit to project later)
+   - **IMPORTANT:** Copy the token immediately (starts with `pypi-`)
+   - Store securely (won't be shown again)
+
+### 2. Upload to PyPI
+
+```bash
+cd /Users/melvinalvarez/Documents/Workspace/optimiz-r
+
+# Upload with API token
+twine upload target/wheels/optimizr_rs-1.0.0-cp38-abi3-macosx_10_12_x86_64.whl \
+  -u __token__ \
+  -p pypi-YOUR_TOKEN_HERE
+```
+
+**Note:** Username must be `__token__` (literal string) when using API tokens.
+
+### 3. Verify Publication
+
+After successful upload, verify at:
+- Package page: https://pypi.org/project/optimizr-rs/
+- Test install: `pip install optimizr-rs`
+
+### 4. Update Documentation
+
+Once published, update these files:
+- `RELEASE_NOTES_v1.0.0.md` - Change "(publishing in progress)" to actual link
+- `LINKEDIN_POST.md` - Update PyPI link
+- Commit and push changes
+
+## Alternative: Store Token in ~/.pypirc
+
+For future uploads, store token securely:
+
+```bash
+# Create ~/.pypirc
+cat > ~/.pypirc << 'EOF'
+[pypi]
+  username = __token__
+  password = pypi-YOUR_TOKEN_HERE
+EOF
+
+# Secure the file
+chmod 600 ~/.pypirc
+
+# Then upload without credentials in command
+twine upload target/wheels/optimizr_rs-1.0.0-*.whl
+```
+
+## Troubleshooting
+
+**403 Forbidden:**
+- PyPI deprecated username/password auth
+- Must use API tokens
+- Ensure username is `__token__` (not your actual username)
+
+**Package name conflict:**
+- Already handled - using `optimizr-rs`
+- Cannot use `optimizr`, `optimiz-r`, or `optimizR` (all normalize to "optimizr")
+
+**Token not working:**
+- Verify token copied completely (very long string)
+- Check token hasn't expired
+- Ensure no extra spaces/newlines
+
+---
+
+**Current Publication Status:**
+- ✅ crates.io: Published at https://crates.io/crates/optimizr
+- ⏳ PyPI: Ready to publish (just need API token)