feat: add CHANGELOG.md and update README.md

[xdustinface]

Summary by CodeRabbit

• Documentation
  • Updated setup and Quick Start to use regtest-15000 and clarified data/extraction paths
  • Expanded dataset and wallet data semantics, including wallet export/import and sync expectations
  • Added generation and wallet-sync instructions plus development testing guidance (pre-commit, pytest)
  • Expanded project layout and reorganized development/regeneration guidance
• Chores
  • Added v0.0.2 changelog entry documenting SPV integration tests and generator improvements

[coderabbitai]

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📝 Walkthrough

Walkthrough

The PR updates documentation and release notes for SPV integration tests. CHANGELOG.md gains a v0.0.2 entry describing generator improvements and added tests; README.md is expanded with updated Quick Start, dataset/wallet layout, generation/export scripts, and development/testing guidance.

Changes

Cohort / File(s)	Summary
CHANGELOG Entry CHANGELOG.md	Added v0.0.2 release notes documenting generator improvements (PR #1) and initial SPV integration tests, plus CI/tooling mentions (pre-commit, GitHub Actions).
README and Project Docs README.md	Reworked Quick Start to reference regtest-15000; generalized image/data layout to regtest-<height>; expanded dataset and wallet JSON semantics (mnemonics, addresses, UTXOs, transaction history); added generation (generate.py) and export (export_wallets.py) workflows, wallet-sync strategy, project structure, and development/testing steps (pre-commit, pytest, DASHD_PATH).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐇 I nibble lines and tidy trails,
I stash the seeds of tests and tales,
v0.0.2 hops into view,
Wallets, blocks, and docs anew —
A rabbit's cheer for fixes true.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and accurately summarizes the main changes: adding a CHANGELOG.md file and updating README.md documentation.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feat/changelog-readme

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[coderabbitai]

Actionable comments posted: 3

🤖 Fix all issues with AI agents

In `@CHANGELOG.md`:
- Around line 9-10: Update the two changelog bullets to normalize
capitalization: change "Integration" to lowercase "integration" in the phrase
"implement unit and Integration tests for the generator" and correct "Github" to
"GitHub" in the phrase "add `pre-commit` and Github actions for basic CI"; keep
the rest of the text and links unchanged so the lines read with consistent
"integration" and "GitHub".

In `@README.md`:
- Around line 100-105: The README is missing a trailing newline which triggers
the pre-commit end-of-file-fixer; open the README.md and add a single newline
character at the end of the file (ensure the file ends with a blank
line/linefeed), save and amend the commit so CI no longer reports changes.
- Around line 11-13: Update the Quick Start download URL in the README: replace
the curl command's GitHub owner from "xdustinface" to "dashpay" so the download
uses
"https://github.com/dashpay/regtest-blockchain/releases/latest/download/regtest-15000.tar.gz"
(update the line containing the curl -LO command and ensure the tar extraction
line remains unchanged).

[coderabbitai]

⚠️ Potential issue | 🟡 Minor

Normalize capitalization for consistency (“integration”, “GitHub”).

Minor doc polish: “Integration tests” mid-sentence and “Github” are inconsistent with common style.

🤖 Prompt for AI Agents

In `@CHANGELOG.md` around lines 9 - 10, Update the two changelog bullets to
normalize capitalization: change "Integration" to lowercase "integration" in the
phrase "implement unit and Integration tests for the generator" and correct
"Github" to "GitHub" in the phrase "add `pre-commit` and Github actions for
basic CI"; keep the rest of the text and links unchanged so the lines read with
consistent "integration" and "GitHub".