docs: seed CHANGELOG.md (Keep-a-Changelog format) (#37)

Closes Row-2 Phase 3 of the 2026-05-26 estate tech-debt audit chain
for this repo. The 2026-05-26 documentation-debt audit
(hyperpolymath/standards#197) flagged that 180 of 279 estate repos
lacked a CHANGELOG.md (65% gap) — this seed closes that finding here.

The seed:
  - Uses Keep-a-Changelog format with an [Unreleased] section.
  - Buckets the most recent 100 commits by conventional-commit prefix
    (feat/fix/refactor/docs/ci/build) into Added/Fixed/Changed/
    Documentation/CI sections.
  - References standards#206's changelog-reusable.yml + the canonical
    templates/cliff.toml for full-regeneration via git-cliff.

The file is initial — the maintainer can adopt changelog-reusable.yml
in this repo's CI to keep it auto-regenerated, or regenerate manually.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: hyperpolymath

CHANGELOG.md

@@ -0,0 +1,76 @@
+<!--
+SPDX-License-Identifier: MPL-2.0
+SPDX-FileCopyrightText: 2026 Jonathan D.A. Jewell (hyperpolymath)
+-->
+
+# Changelog
+
+All notable changes to `odds-and-sods-package-manager` will be documented in this file.
+
+This file is generated from conventional commits by the
+[`changelog-reusable.yml`](https://github.com/hyperpolymath/standards/blob/main/.github/workflows/changelog-reusable.yml)
+workflow (`hyperpolymath/standards#206`). Adopt the workflow in this repo's CI to keep this file in sync automatically — see
+[`templates/cliff.toml`](https://github.com/hyperpolymath/standards/blob/main/templates/cliff.toml)
+for the canonical config.
+
+The format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/);
+this project aims to follow [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Added
+
+- feat(storage): S3/IPFS tarball cache backends replacing /tmp-only caching
+- feat(security): CVE/OSV scanning + typosquat detection
+- feat(tui): wire opsm tui dispatch to ratatui binary
+- feat(cli): history undo <n> by position/ID + pin-aware update
+- feat(bots): scaffold .bot_directives/ for gitbot-fleet targeting
+- feat(e2e): enterprise trust pipeline live-service E2E tests + CI workflow
+- feat(crg): achieve grade B — 6 diverse external targets documented
+- feat(fuzz): property-based fuzz harness covering 6 OPSM boundary surfaces
+- feat(gossamer): complete Tauri elimination; Gossamer-native IPC
+- feat(e2e): add error-handling + workspace audit E2E scenarios; wire into CI
+
+### Fixed
+
+- fix(affine): migrate record literals to #{ } (affinescript#218) (#29)
+- fix(ci): pin upload-artifact to valid SHA (Refs standards#48) (#27)
+- fix(ci): bump a2ml/k9-validate-action pins to canonical (standards#85) (#25)
+- fix(ci): sync hypatia-scan.yml to canonical (kill cd-scanner build drift) (#24)
+- fix(ci): build Hypatia escript from repo root (estate dogfood drift)
+- fix(ci): Phase-2 fleet submission must not fail the security gate (#23)
+- fix(security): bump rand 0.9.2 → 0.9.3 in opsm-tui (GHSA-cq8v-f236-94qc) (#17)
+- fix(ci): root-cause three pre-existing infra failures (#18)
+- fix(ci): rsr-antipattern.yml duplicate heredoc (#19)
+- fix(ci): repair YAML block-scalar in workflow-linter Check Permissions step (#20)
+
+### Changed
+
+- refactor(contractiles): complete layout migration to .machine_readable/contractiles/
+- refactor(arch): architectural reconciliation — compose profiles, TOML parsers, SPDX, pipeline fix
+
+### Documentation
+
+- docs(test-needs): update for v1.5 deliverables (TUI, CVE/OSV, S3/IPFS)
+- docs(roadmap+tests): bring ROADMAP and TEST-NEEDS fully current
+- docs(6a2): populate META ADRs and ECOSYSTEM relationships
+- docs(rsr): add RSR_COMPLIANCE.adoc — filled compliance record
+- docs: add paper sketch for Zenodo/arXiv submission on cross-ecosystem package management
+- docs: substantive CRG C annotation (EXPLAINME.adoc)
+- docs: add TEST-NEEDS.md and/or PROOF-NEEDS.md from audit
+
+### CI
+
+- ci: redistribute concurrency-cancel guard to read-only check workflows (#28)
+- ci: bump actions/upload-artifact SHA to current v4 (#16)
+- ci(secret-scanner): drop duplicate --fail from trufflehog extra_args (#15)
+- ci: SHA-pin hyperpolymath validate-actions in dogfood-gate
+- ci(antipattern): fix top-level dir matching + benchmarks/lsp/bench filename allowlists (#14)
+
+## Pre-history
+
+Prior commits to this file's introduction are recorded in git history but not formally classified into Keep-a-Changelog sections. To backfill, run `git cliff -o CHANGELOG.md` locally using the canonical [`cliff.toml`](https://github.com/hyperpolymath/standards/blob/main/templates/cliff.toml) — this is one-shot mechanical work.
+
+---
+
+<!-- This file was seeded by the 2026-05-26 estate tech-debt audit follow-up (Row-2 Phase 3); see [`hyperpolymath/standards/docs/audits/2026-05-26-estate-documentation-debt.md`](https://github.com/hyperpolymath/standards/blob/main/docs/audits/2026-05-26-estate-documentation-debt.md). -->