[deep-report] Add make fmt pre-commit hook to eliminate top CI failure class

[github-actions]

Description

The #1 verified incident in the Hippo Memory store (score 1.00, verified, 525 memories) is: "Unformatted code causes immediate CI failures — make fmt is mandatory before commit/PR." Despite CI enforcement, this issue recurs because there is no pre-commit barrier. Adding a git pre-commit hook that runs make fmt and refuses commits that would fail CI formatting checks would eliminate this entire class of failures at source.

Expected Impact

• Eliminates the most common class of CI failures (formatting)
• Removes developer friction from the red/green/re-push cycle
• Reduces wasted CI minutes on trivial failures
• Complementary to the existing CI gate (defence in depth)

Implementation

1. Add .githooks/pre-commit script:

   #!/bin/sh
   make fmt
   git add -u  # re-stage formatted changes

2. Add make setup-hooks target to Makefile that runs git config core.hooksPath .githooks
3. Document in DEVGUIDE.md: run make setup-hooks after cloning

Alternatively, use a lefthook.yml or .pre-commit-config.yaml if those tools are already present in the repo.

Suggested Agent

Copilot coding agent — Makefile + hook script creation, documentation update.

Estimated Effort

Quick (< 1 hour)

Data Source

DeepReport Intelligence Briefing — 2026-05-05 · Hippo Memory Insights §25362493917

Generated by DeepReport - Intelligence Gathering Agent · ● 369.8K · ◷

• expires on May 7, 2026, 3:34 PM UTC

[github-actions]

🍪 Issue Monster selected this for Copilot

I've identified this issue as a good candidate for automated resolution and requested assignment to the Copilot coding agent.

If assignment succeeds, the Copilot coding agent will analyze the issue and create a pull request with the fix.

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