Support Python 3.10 through 3.15

[BenWestgate]

Closes #18.

This extends the supported interpreter range through Python 3.15 and makes 3.15 blocking CI coverage.

• support Python 3.10 through 3.15 in package metadata and documentation
• replace the few 3.11+/3.12-only runtime conveniences with 3.10-compatible equivalents
• preserve Profile string behavior
• run the full test suite on every supported Python version: 3.12/3.13 across Ubuntu, macOS, and Windows; 3.10/3.11/3.14/3.15 on Ubuntu
• keep the existing lint, type, differential, build, and wheel checks on the cross-platform matrix without multiplying those expensive checks across every OS/version pair
• make the create CLI test terminal double robust to interpreter-level argparse TTY probes; production create preflight still requires only interactive stdin/stdout and still runs before Bitcoin Core initialization or entropy

The split CI matrix is deliberate: 3.12/3.13 exercise platform differences across Ubuntu, macOS, and Windows, while the Ubuntu compatibility job fills the remaining supported interpreters (3.10, 3.11, 3.14, and 3.15). Every supported Python therefore gets a full pytest run at least once. The 3.15 setup step permits prerelease resolution only for that matrix leg because GitHub's hosted Python toolcache does not yet expose a stable 3.15 build; the 3.15 job itself remains blocking.

Validation:

• python -m pytest -q tests/test_cli.py — 223 passed
• python -m pytest -q — 864 passed
• strict mypy targeting Python 3.10
• Ruff check/format targeting Python 3.10
• package build and Twine checks
• GitHub Actions pull-request matrix — all 10 jobs passed, including blocking Python 3.15 coverage

Stacked on #7. The branch is one commit ahead of the current #7 head and zero behind.

Disclosure: AI tools were used while implementing and checking this user-requested branch-to-branch contribution.

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[chatgpt-codex-connector]

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Reviewed commit: f49f06b8ad

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[BenWestgate]

looks good except for python-package.yml

[BenWestgate]

The python-package.yml split is deliberate: 3.12/3.13 keep the full cross-platform matrix plus mypy/Ruff/differential/build/wheel checks, while 3.10/3.11/3.14/3.15 run the full pytest suite as required Ubuntu compatibility jobs. That exercises every advertised interpreter without multiplying the expensive platform/tooling matrix. All six supported versions are green at the current head.

Disclosure: AI-assisted verification of the current workflow and check results.

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[BenWestgate]

Stack refresh completed at 1b2e9c9: merged the current #7 head into this branch without rewriting history. Fresh .[dev] installation succeeds; 864 pytest tests pass, along with Ruff check/format, strict mypy, and git diff --check. The earlier PR-description warning that this branch still needed refresh is now satisfied.

[BenWestgate]

Correction to my preceding refresh note: this branch is now refreshed to the current #7 head, but integration preflight against today’s reviewability-v1 still finds a pyproject.toml conflict caused by base-branch drift outside #7. After #7 is merged, retarget #36 to reviewability-v1 and do one final refresh/range-diff before merge. The compatibility commit itself and its fresh .[dev]/864-test validation remain clean.

[BenWestgate]

AI-generated review (Claude), posted at the maintainer's request.

Concept ACK. Code looks right; not ACKing 1b2e9c9 until it's rebased.

• The head is a merge of #7 (1b2e9c9). CONTRIBUTING asks for no merge commits, so rebase 6fc90d5 onto #7's head, as the PR body already says.
• I found no other 3.11+ APIs in src. Profile(str, Enum) with __str__ = str.__str__ also gives "ms" from format()/f-strings on 3.10/3.11.
• 3.15 classifier/cap ahead of the 3.15.0 final is fine given allow-prereleases CI.

[BenWestgate]

Release-gate recheck: the earlier “rebase before ACK” review condition is still real. Although the branch compares as 2 commits ahead / 0 behind #7 head 90e5460, current head 1b2e9c9 is itself Merge updated wallet test boundary and preserves the refresh merge. Please rebase the compatibility delta onto 90e5460 so the PR becomes a linear #7 → Python-compatibility stack with no merge commit, then rerun the matrix. Until that rewrite, treat this as Concept ACK rather than final ACK.

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[BenWestgate]

LGTM