Brand Identity Rename
Gantry Rename Cutover
A product rename carried through code, runtime contracts, web surfaces, and release preparation.
3 milestones 16 tasks 39 agents
9 plan 15 execute 21 review 1 fix
244k peak context
158k median execute
5h 38m total 14m 27s per task
9m 19s plan 3h 6m execute 47m 28s review
188 edits 1.5k commands
codex harness
This run moved the project from the Gantry-era identity to Gantry across the shipped Rust binary, the Rails site, runtime storage, environment keys, documentation, prompts, and release preparation. The hard part was not the word swap; it was deciding which old names were live compatibility contracts and which were current product surface that had to move. The decomposition followed that risk. It first made the visible and compiler-checked identity coherent, then changed runtime contracts with read compatibility for old runs, then finished public web, commerce, release, and screencast surfaces while leaving live operations and generated media outside the sandbox.
How this walkthrough is structured
Feature
What did the run build and ship?
Gantry now stands as the product, binary, runtime namespace, documentation vocabulary, and primary web identity, while later site work has revised part of the public-host layer around the company brand split.
Build
How did Gantry structure the work?
The run was cut by contract boundary: visible identity first, runtime compatibility second, and public release surfaces last, with replans where reviews found residual names outside the current slice.
Milestone 1
Core Brand Identity
5 tasks 17 agents 2h 22m wall time 244k peak context
The visible Gantry identity is still present in the root README, crate manifest, binary declaration, CLI help, web overview, styleguide, and product prose. The old bowtie story has been replaced by the join and truss explanation, and the shipped package is named for Gantry. Some files touched by this milestone were later rewritten or removed, but the core product identity it established remains the tree's current vocabulary.
This milestone carried the part of the rename that a fresh agent could verify through product surfaces rather than live runtime state. Its brief explicitly kept on-disk run storage, environment variables, production domains, and screencast history out of scope, which made the first cut broad but bounded. The milestone finished green, but its review found buyer-facing checkout text and helper binary flags still exposing the old name, so later milestones had to treat those as known carry-over rather than assume the core sweep was complete.
Mark And Wordmark
2 agents 9m 12s wall time 115k peak context
The Gantry mark still leads the README and appears in the overview page's build flow. Product copy describes the symbol as a join, truss, loop, and convergence point rather than the old Gantry wordplay. The remaining old mark references are no longer active branding in the surfaces this sprint owned.
This sprint was the anchor for the brand contract: settle the mark, wordmark, and symbol story before code and prose started consuming them. The cut was small enough for one agent because it stayed on rendered marks and current product copy, leaving storage names, domains, and generated media alone. The run facts show no recovery here, so the boundary held.
Rust Product Identity
5 agents 1h 9m wall time 244k peak context 1 replan
The crate and primary binary are now Gantry, and the live CLI entry point is built around the Gantry name. Rust documentation and tests still contain compatibility references to Gantry where they describe old run data, but current product identifiers in the compiled surface are Gantry. The sprint's isolated contribution is partly merged into later runtime and CLI refactors, yet the package identity it moved is still standing.
This was the first stressed cut. It tried to rename the compiler-checked Rust identity, package, binary, local product commands, and help text without touching the third-party crate or runtime contracts. Review sent it back for a retry, which fits the brief's danger: the work crossed generated lock metadata, source identifiers, scripts, and tests while still having to preserve unrelated old-name data.
Web UI Identity
2 agents 17m 40s wall time 158k peak context
The active site presents Gantry in the layout, overview, checkout flow, downloads, legal pages, and reference surfaces. Some controller and route names have changed again as the site added a replay section and a company brand, so not every old web identifier from the run survives as written. The user-facing Gantry UI identity remains the baseline.
This sprint moved the browser-facing side after the mark and binary identity were already established. Its brief was broad across copy, controllers, events, CSS, animations, and tests, but each surface lived inside the Rails app and could be checked through the web gate. It completed without recovery, which suggests the web slice was coherent once the product mark contract was available.
Docs Prompts And Filenames
2 agents 13m 42s wall time 223k peak context
Current documentation describes Gantry's pipeline, config tiers, prompt override paths, assistant prompt, and run-scoped server under Gantry names. The docs still mention Gantry where compatibility with legacy run directories or historical material is the subject. That distinction is visible in the config and agent references rather than hidden in a blind text replacement.
This sprint waited until visible and compiled identity were in place, then swept current prose, prompt names, examples, and product-owned filenames. The brief kept live runtime contracts and public domains out of scope, which was important because those names were still intentionally old at this point. It stayed green because the agent could classify written material against the contracts already delivered by earlier sprints.
Residual Brand Audit
2 agents 14m 39s wall time 196k peak context
The audit left the core brand surface grep-clean for current product usage while preserving old names in compatibility, history, migration tooling, and third-party data. That classification still matters today because the live tree deliberately reads old `.gantry` histories while writing `.gantry` artifacts. The audit's own files were mostly run records, but its product result is the boundary current docs still use.
The milestone ended with an audit sprint because this rename crossed too many file families for the earlier slices to prove absence on their own. Its job was not to invent new behavior, but to search for missed current-product names and either fix them or classify them as protected. The facts show a clean pass, and the milestone-level review rather than this sprint surfaced the remaining checkout and helper gaps.
Milestone 2
Runtime Contracts
6 tasks 19 agents 2h 19m wall time 236k peak context
The runtime namespace policy still exists in the engine: new runs write under `.gantry`, sibling worktrees use `.gantry-worktrees`, branches use the Gantry prefix, and readers can still inventory legacy Gantry names. Environment documentation and schema use `GANTRY_*` for current product configuration. Later pattern and shape work has extended this area, but the read-both and write-new contract remains the live runtime model.
This milestone owned the risky part the first milestone deferred: runtime paths, branch names, run discovery, attach state, and environment variables. The first sprint was replanned after review, and the milestone review later found Rails task names and a blocker seed artifact still outside the renamed contract. That made the cut honest: it moved the engine contract first, then handed residual Rails surfaces to the public milestone instead of hiding them.
Naming Policy
4 agents 29m 1s wall time 84k peak context 1 replan
`src/engine/runtime_names.rs` now centralizes current and legacy runtime names behind a small API. Worktree storage, branch naming, and environment-file lookup have a policy point instead of scattered literals. The file still plainly names legacy Gantry data as readable history, which is the compatibility rule the rest of the runtime consumes.
This sprint was narrowed by a prior failed shape of the work: instead of moving every runtime caller at once, it created the policy surface and routed only the first-level producers. Review still forced a replan, which shows how easy it was for direct path derivations to hide in the engine. The revised boundary gave later agents a named contract to consume.
Dual Read Migration
2 agents 40m 41s wall time 236k peak context
Run discovery and operation paths still understand both current `.gantry` runs and legacy `.gantry` runs. The config docs describe current writes with legacy reads, and registry code still treats both namespaces as inventory sources. That is the durable compatibility behavior this sprint introduced.
Once the policy existed, this sprint could move durable run behavior without also solving live attach. The brief named the ordinary run verbs and made run identity stability the invariant: operate on the namespace a run actually lives in, never clone an old run into a new home by accident. It completed cleanly because the storage behavior had already been separated from the naming vocabulary.
Owner Attach Bridge
2 agents 14m 16s wall time 169k peak context
Attach endpoint resolution now derives from the run lock path, so owner and observer agree on the socket location under the resolved runtime home. The attach codec still carries legacy fixtures for old event shapes while current paths resolve through Gantry runtime names. Later socket relocation work has expanded the module, but it builds on this bridge.
This sprint isolated live state from durable storage. It had to make the owner process and every attacher resolve the same lock and socket path whether the run was current-name or legacy-name. With storage resolution already in place, the live transport cut stayed green.
Engine Environment Contract
3 agents 16m 50s wall time 205k peak context 1 replan
The configuration schema and docs expose current `GANTRY_*` variables for product configuration, including per-harness model and binary keys. Legacy keys remain only where a specific compatibility exception is documented, such as Claude aliases. The engine-side contract is visible in code rather than spread across ad hoc readers.
This sprint made the deliberate clean break that storage did not make. The engine stopped treating old environment keys as fallbacks for current configuration, so the work had to touch standing config, harness invocation, sandboxing, locks, tests, and generated per-harness keys in one pass. A replan step ran after review, but the sprint did not need a retry.
Surface Alignment
2 agents 11m 27s wall time 138k peak context
Current helper scripts accept Gantry binary overrides, Rails and release tasks use Gantry environment keys, and release helpers read current product configuration. Protected scripts that operate on old screencast wording still carry old names by design. The live tree also contains newer release and replay helpers, but they follow the Gantry environment vocabulary this sprint established.
After the Rust environment contract moved, this sprint brought Rails, release helpers, local scripts, and helper flags into line. Its boundary was practical: product-owned helper names moved, but old screencast migration scripts stayed protected because their purpose was to edit old text. The pass stayed green because it consumed the engine contract instead of redefining it.
Docs And Audit
2 agents 16m 5s wall time 171k peak context
The current config and runtime docs describe `.gantry` writes, `.gantry` compatibility, prompt freezing, run discovery, and `GANTRY_*` environment keys. They also classify legacy file locations and old prompt stems as compatibility data instead of current configuration. The documentation survives as the reader-facing contract for the runtime rename.
The runtime docs and audit came last because they needed the as-built behavior from every earlier runtime sprint. The brief asked it to describe current writes, legacy reads, attach behavior, and the clean environment break, then search for residual misses across the named production families. It completed without recovery, but the milestone review still found Rails admin names and a newly written artifact that belonged to the next milestone's residual cleanup.
Milestone 3
Public Release Surfaces
5 tasks 13 agents 1h 8m wall time 123k peak context
The site and release stack still treat Gantry as the product and `gantry.software` as its public origin. Some of the legacy-domain policy this milestone added has since been replaced by a broader two-brand web app with HyperClank as the company site, so the original `gantry.industries` compatibility layer is no longer the current host model. Commerce, release, and screencast preparation remain Gantry-named in the live tree.
The final milestone collected the public and operational tail: commerce copy, Rails helper names, host policy, redirects, release defaults, mailers, cache purge, and screencast preparation. One redirect sprint hit a red gate and needed a fix, and the milestone review found the version-check compatibility path had been accepted as missing rather than implemented. That left a documented scope gap while still finishing the repository-owned public rename.
Residual Name Cleanup
2 agents 11m 36s wall time 123k peak context
Stripe checkout parameters now use Gantry buyer-facing product names, while stored provider metadata keeps compatibility keys where they are external data. Rails release tasks live under the Gantry namespace and operator docs describe the Gantry commands. The old commerce and admin naming this sprint targeted no longer appears as current product surface.
This sprint deliberately cleaned up what earlier milestones had left behind instead of mixing those misses into host policy work. It covered active purchase flows, repository-owned Stripe fields, Rails task namespaces, operator docs, and blocker seed names. The run facts show it passed cleanly, which made the next sprint safe to treat Rails operations as Gantry-named except for explicit compatibility data.
Public Host Policy
1 agents 11m 58s wall time 53k peak context
The live tree still centralizes deployed host policy in `web/lib/public_host_policy.rb`, and release, mailer, deploy, and cache purge code read from that shared policy. The specific legacy-host set from the rename run has been superseded by the later HyperClank company-site split, but the primary Gantry origin remains `gantry.software`. The architectural residue is the single policy point rather than scattered domain literals.
This sprint separated primary public hosts from compatibility hosts before redirects were added. The cut was configuration and policy only: no DNS, TLS, deploy, cache purge, or provider operation belonged inside the sandbox. It stayed green, giving the redirect sprint a host contract to consume.
Canonical Redirects
3 agents 13m 39s wall time 118k peak context 1 fix
The exact legacy redirect implementation from this sprint has since been removed or reshaped as the site adopted brand-constrained routing for Gantry and HyperClank. The current route table still treats host dispatch as a first-class routing concern, with product pages constrained to the Gantry brand. This sprint's contribution is therefore partly superseded, but the idea of explicit host behavior survived in a different form.
This was the red public-web cut. It layered routing behavior onto the host policy, with ordinary legacy-host page traffic redirecting while machine compatibility paths served in place. The gate failed once and a fix agent repaired it, locating the difficulty in the route distinction rather than in the host list itself.
Screencast Prep
1 agents 15m 1s wall time 107k peak context
Screencast scripts and replay recording tools now drive the `gantry` binary and use Gantry environment names for recording configuration. The repo still contains protected migration scripts that search or apply old Gantry wording in frozen screencast material. The actual clip roster and videos have continued to evolve after this run, so this sprint's preparation is present as tooling and policy rather than a fixed media set.
Screencast work was cut as repository preparation, not media production. The brief kept generated audio, rendered video, machine-local registries, and paid narration out of scope, while moving schemas, scripts, manifests, docs, and validation expectations that the repo owns. It passed cleanly because the agent did not have to touch the live recorded corpus.
Final Inventory
2 agents 5m 54s wall time 110k peak context
Runbooks and operator docs still distinguish repository work from live release, domain, cache, registry, narration, and recording tasks. Remaining old-name references in the touched families are framed as legacy domain data, history, legal continuity, external metadata, protected migration tooling, or generated media awaiting manual work. Later release and website changes have expanded those docs, but the operational boundary remains explicit.
The final sprint made the post-merge boundary explicit and audited the old-name surface left after public, release, commerce, and screencast preparation. Its brief forbade the sandbox from attempting live infrastructure, paid narration, generated media, or local registry edits. It completed cleanly, but the milestone review still recorded the missing version-check path as a real plan-impact note.