docs(azure-foundry): add provider guide, env vars, release AUTHOR_MAP

- New website/docs/guides/azure-foundry.md covering both OpenAI-style
  and Anthropic-style endpoints, auto-detection behaviour, gpt-5.x
  routing, /v1 stripping, api-version query forwarding, and the
  provider: anthropic + Azure URL alternative setup.
- environment-variables.md picks up AZURE_FOUNDRY_API_KEY,
  AZURE_FOUNDRY_BASE_URL, AZURE_ANTHROPIC_KEY.
- cli-commands.md includes azure-foundry in the provider choices list.
- configuration.md lists azure-foundry among auxiliary-task providers.
- sidebars.ts wires the new guide into the Guides section.
- scripts/release.py AUTHOR_MAP entries for TechPrototyper,
  HangGlidersRule (noreply), and pein892 so the contributor-attribution
  CI check does not reject the salvage.

scripts/release.py

@@ -180,6 +180,10 @@ AUTHOR_MAP = {
     "jaisehgal11299@gmail.com": "jaisup",
     "percydikec@gmail.com": "PercyDikec",
     "noonou7@gmail.com": "HenkDz",
+    # Azure Foundry salvage (PRs #9029, #4599, #10086, #8766)
+    "tech@smartlogics.net": "TechPrototyper",
+    "637186+HangGlidersRule@users.noreply.github.com": "HangGlidersRule",
+    "pein892@gmail.com": "pein892",
     "dean.kerr@gmail.com": "deankerr",
     "socrates1024@gmail.com": "socrates1024",
     "seanalt555@gmail.com": "Salt-555",