Three focused examples for Python, Excel and responsive-web work. AI-assisted using Codex; claims below refer to executed checks, not client endorsements or paid engagements.
Available scopes include spreadsheet cleanup, public-source research comparisons, a reproducible Python bug, and a focused responsive-layout fix. To discuss a quote, open an issue with a short brief: describe the desired output, approximate input size, deadline and budget. Public issues are for non-sensitive briefs only; do not upload private files, credentials or personal records. Scope, delivery date and acceptance checks are agreed before work starts.
Conveyor Studio Kit — 13 Industrial 3D Assets is a separate, original Blender/GLB pack listed at USD 24. It includes conveyors, handling and storage props, an assembly example and editable source. Static visualization assets; not manufacturing CAD or print-certified models. The paid pack has its own license and is not included in this sample repository. Payment setup is being finalized; availability of the listing does not guarantee checkout readiness. Questions about a custom static model can use the project-brief link above.
Problem: inconsistent IDs, duplicate rows and missing quantities can distort a routine operations summary.
Delivery: an editable two-sheet Excel workbook with 18 synthetic input rows, preserved originals, normalized IDs/teams, explicit review reasons and live summary formulas. Every occurrence of a duplicate ID is excluded until resolved. Missing quantities remain blank in the source.
Result: 12 ready rows, six review rows, 77 ready units. Twelve calculation/edge checks passed. An independent standard-library Python check recomputed the answer and inspected the exported XLSX: 82 live formulas, matching cached totals, no formula error cells, no macros or external workbook links. Both sheets were visually inspected.
Limits: this is a fixed 18-row demonstration; extending it requires extending the source/formula/summary ranges. Checked using artifact-tool and XLSX XML, not a native Microsoft Excel session. All data is fictional; no customer spreadsheet was processed.
Open excel/order-quality-demo.xlsx. To independently check the delivered file from this kit's root: python excel/verify_export.py excel (Python 3, no third-party packages).
Problem: a deliberately introduced 1080px fixed-width layout causes horizontal overflow on small viewports.
Delivery: original HTML/CSS/JavaScript workshop concept, repaired responsive layout, mobile menu with expanded state and Escape focus restoration, native FAQ controls, and local form validation. The comparison page switches between before/after at four widths. CSS illustration is original and needs no downloaded assets.
Result: 17 browser checks passed in Edge Chromium 152.0.4191.66, including widths 320, 390, 768 and 1280px. The broken fixture overflows at the three smaller widths; the repaired page does not. Keyboard menu/FAQ, invalid fields, local preview and no unintended submission request were checked. Desktop and mobile screenshots were visually inspected. The internal Codex browser also reproduced the before overflow and repaired layout.
Limits: the workshop is fictional, the baseline bug was intentionally constructed, and this is not a previous customer's site. No physical iOS/Safari test. The form has no backend, booking or payment. It does not transmit or save its inputs.
Open web/index.html directly for the repaired page. For the before/after comparison, serve the kit locally with python -m http.server 8769 --bind 127.0.0.1, then open http://127.0.0.1:8769/web/compare.html. Stop the server with Ctrl+C.
Problem: Developer API operations need a configurable timeout while keeping documented defaults and existing retry behavior.
Delivery prepared: a finite positive global --timeout option, propagation through the CLI/API client and post-login API verification, documentation and eight new test cases. Based on upstream commit 5d29ea0c35d0f03fbfb02990495921d1cc5245df.
Recorded checks (2026-09-09): eight added tests passed. A real CLI subprocess against a synthetic loopback HTTP server failed with a short timeout and succeeded with a longer one. Full CLI suite: 284 passed, one failure independently reproduced on unchanged upstream and tracked in issue #13191. Formatting, targeted typing and patch application checks passed.
Status: proposal BasedHardware/omi#13218. No acceptance, award, merge, payment or endorsement. Repository-wide setup/preflight remains incomplete. These results come from the existing local run record; the unchanged suite was not rerun while assembling this portfolio.
Agree on one reproducible problem, sanitized inputs, acceptance criteria and delivery scope before work starts. Receive the focused deliverable, relevant checks and a short handoff. Payment for agreed work uses PayPal Goods and Services; do not post payment details in an issue. These samples and the separate asset listing are not paid-client results, and no order is represented here.
GitHub identity for this portfolio: umd0730. No personal contact, payout or authentication information is included.