feat: add emojis to CLI output

[Tofel]

Make the output a bit cleaner + add emojis:

RESULTS
ALERT                                                                VERDICT  BROKEN FOR  CHECKED EVERY  WINDOW COVERED  DETAILS
[Staging][CRE][Zone-A][Confidential HTTP] Execute Error Rate Spike   healthy  0s          30s            yes
[Staging][CRE][Zone-A][Confidential HTTP] Vault DON Errors Elevated  healthy  0s          30s            yes

LIMITS USED
ALERT                                                                MAX GAP WITHOUT CHECK  QUERY FAILING FOR  NO EVALUATION FOR
[Staging][CRE][Zone-A][Confidential HTTP] Execute Error Rate Spike   1m0s                   1m0s               2m0s
[Staging][CRE][Zone-A][Confidential HTTP] Vault DON Errors Elevated  1m0s                   1m0s               2m0s

Legend:
max gap without check — the longest gap between two checks we accept before we say the alert was not watched.
query failing for — how long Grafana may keep failing to run the alert's query before we stop trusting its state.
no evaluation for — how long Grafana may go without evaluating the alert before we stop trusting its state.

extra watching after your window: +6m0s — so an alert that only starts firing at the end is still caught (slowest: [Staging][CRE][Zone-A][Confidential HTTP] Execute Error Rate Spike (for=5m0s, interval=1m0s))
max wait for all alerts to finish evaluating: 2m0s
clock difference from Grafana: 812ms, accurate to ±238ms (checks fail above 1m0s)

Grafana version: 13.2.1

✅ violations: 0

[github-actions]

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[github-actions]

📊 API Diff Results

No changes detected for module github.com/smartcontractkit/chainlink-testing-framework/grafana-alertcheck

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[Copilot]

Copilot review overview

🟢 Approval recommended

The formatting changes are consistent, documented, and adequately tested.

Review effort: Balanced
Findings: None

What changed in this PR

Improves Grafana alert-check CLI readability with clearer spacing, labels, and status emojis.

Changes:

• Adds a Legend: heading and separates the Grafana version.
• Marks violation totals with ✅ or ❌.
• Updates tests, documentation, and release notes.

File	Description
grafana-alertcheck/​cmd/​table.go	Refines CLI footer formatting and status markers.
grafana-alertcheck/​cmd/​table_test.go	Tests the revised output and emoji selection.
grafana-alertcheck/​docs/​reference/​cli.md	Documents the updated human-readable output.
grafana-alertcheck/​.changeset/​v0.1.5.md	Records the user-facing CLI changes.

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