ROB-834 Add F5 Distributed Cloud page to Send Events API docs

[arikalon1]

Adds the customer-facing setup page for the new F5 Distributed Cloud alerts integration — companion to robusta-dev/relay#691 (the origin=f5 webhook alert parser) and robusta-dev/robusta-frontend#3483 (the f5 source entry, whose card links to this page at send-events/f5.html).

What

• New page docs/configuration/exporting/send-events/f5.rst, following the same structure as the sibling send-events pages (Grafana et al.): prerequisites, webhook URL, F5 XC console steps (webhook alert receiver with Token authentication + alert policy routing), and Send Test Alert verification. A Notes section covers the F5→Robusta severity mapping (critical/major → HIGH, minor → LOW, info → INFO), that F5's namespace label is an XC namespace kept as a label rather than a Kubernetes namespace, and the &cluster= URL override.
• Index send-events-api.rst: added send-events/f5 to the toctree and an "F5 Distributed Cloud" card under the Other integrations section.

Testing

Built the send-events pages with Sphinx (isolated project loading the repo's region_box extension plus sphinx_design/sphinx_copybutton, since the full-site build requires the robusta package): f5.rst and the updated index build clean with -W; the F5 card renders on the index and the webhook URL renders correctly on the page. (Full-site build runs in the deploy-docs workflow as usual.)

🤖 Generated with Claude Code

https://claude.ai/code/session_01NhfExtHG9haNaK6Ls9dmLg

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Generated by Claude Code

[github-actions]

✅ Docker image ready for 939f2b9 (built in 5m 0s)

• us-central1-docker.pkg.dev/robusta-development/temporary-builds/robusta-runner:939f2b9

⚠️ Warning: does not support ARM (ARM images are built on release only - not on every PR)

Use this tag to pull the image for testing.

📋 Copy commands

⚠️ Temporary images are deleted after 30 days. Copy to a permanent registry before using them:

gcloud auth configure-docker us-central1-docker.pkg.dev
docker pull us-central1-docker.pkg.dev/robusta-development/temporary-builds/robusta-runner:939f2b9
docker tag us-central1-docker.pkg.dev/robusta-development/temporary-builds/robusta-runner:939f2b9 me-west1-docker.pkg.dev/robusta-development/development/robusta-runner-dev:939f2b9
docker push me-west1-docker.pkg.dev/robusta-development/development/robusta-runner-dev:939f2b9

Patch Helm values in one line:

helm upgrade --install robusta robusta/robusta \
  --reuse-values \
  --set runner.image=me-west1-docker.pkg.dev/robusta-development/development/robusta-runner-dev:939f2b9

[coderabbitai]

Walkthrough

Added F5 Distributed Cloud documentation for forwarding alerts to Robusta. Added the document to the Send Events API toctree and added an integration card.

Changes

F5 Distributed Cloud documentation

Layer / File(s)	Summary
F5 integration guide docs/configuration/exporting/send-events/f5.rst, docs/configuration/exporting/send-events-api.rst	The documentation covers webhook setup, receiver and policy configuration, verification, severity mappings, label handling, cluster association, toctree registration, and the integration card.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Suggested reviewers: sheeproid

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly identifies the addition of the F5 Distributed Cloud page to the Send Events API documentation.
Description check	✅ Passed	The description accurately explains the new F5 Distributed Cloud documentation page, index updates, integration context, and testing performed.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch claude/f5-alerts-docs

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@docs/configuration/exporting/send-events/f5.rst`:
- Line 31: Update the F5 configuration guide after saving the alert policy to
include activating it: open Active Alert Policies, select robusta from the
Active Alert Policies drop-down, and save before proceeding.

🪄 Autofix

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: d115bc27-e34d-4046-93f0-c68d5e7e6ffc

📥 Commits

Reviewing files that changed from the base of the PR and between 43d920a and b25d102.

📒 Files selected for processing (2)

• docs/configuration/exporting/send-events-api.rst
• docs/configuration/exporting/send-events/f5.rst