Discord message links

[ArnabChatterjee20k]

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[greptile-apps]

Greptile Summary

The PR adds Discord jump links for retrieved discussions and appends them to user-facing QA and reply notifications while keeping stored answers and ticket comments unchanged.

• Adds single-message and message-span link formatting, including direct-message links through Discord’s @me route.
• Returns formatted Discord references alongside retrieval context and appends them only to notifier deliveries.
• Updates Discord formatting tests for guild, direct-message, empty-result, span, and relevance-score behavior.

Confidence Score: 4/5

The PR should not merge until the outstanding red-phase error path can no longer accept a fix without confirming a failing-test reproduction.

A red-phase agent error still falls through without recording red confirmation, while the later green phase can confirm an unchanged baseline solely because it contains no new failures.

Files Needing Attention: crates/claudear-engine/src/processing.rs

Important Files Changed

Filename	Overview
crates/claudear-analysis/src/knowledgebase/discord/mod.rs	Adds reusable Discord jump-link and reference-block formatting with focused unit coverage.
crates/claudear-analysis/src/knowledgebase/mod.rs	Re-exports the new Discord reference-link formatter.
crates/claudear-engine/src/processing.rs	Threads Discord references through retrieval and appends them to notifier deliveries; the previously reported red-green gate defect remains elsewhere in this file.

_{Reviews (4): Last reviewed commit: "linting" | Re-trigger Greptile}