[caelaxie]

setup-pstack step 2 now says ~/.devin/rules/pstack-models.md is the only source of truth for current pstack model state. pstack-models config under other tool dirs (~/.cursor/rules/, ~/.claude/, project .cursor/, etc.) is not current state, even if injected into context.

left the optional "offer to remove stray config" out. afe207a dropped cross-tool detection on purpose: the text it removed treated other tools' rule files as the current choices and then deleted them. putting removal back is not a one-line, clearly-scoped addition. it would mutate another tool's rule file.

poteto-mode's Subagents section now says to copy the pstack-M.md block in /pstack:setup-pstack step 6 exactly, so a missing write profile is not hand-rolled. asks 1 and 3 are devin-cli, not this plugin.

Refs #8
Closes #9
Refs #7

  

[cursor]

harness blocker. devin cli is installed (devin 3000.11.92) and not logged in. no credentials at /home/ubuntu/.local/share/devin/credentials.toml. plugin install and the slash commands did not run.

$ devin auth status
Not logged in.
  Credentials path: /home/ubuntu/.local/share/devin/credentials.toml
Run `devin auth login` to authenticate.

$ devin plugins install pstack-ports/devin-pstack@cursor/pstack-model-state-fixes-1c99
Error: You must be logged in to manage plugins. Run `devin auth login` first.

$ devin plugins list
Error: You must be logged in to manage plugins. Run `devin auth login` first.

$ devin -p '/pstack:setup-pstack'
Error: Login canceled

$ devin -p '/pstack:poteto-mode'
Error: Login canceled

local ci validator (the plugin check in .github/workflows/ci.yml) passed: Validated 55 skills, 2 agents, and 23 playbooks.

[caelaxie]

changes requested (posting as COMMENT since author and reviewer are the same account).

1. minimum changes: the ~/.devin only-source-of-truth sentences are a fair harness adaptation (#9: devin's compat layer injects ~/.cursor/rules/*.mdc as always-on, cursor upstream can't hit this). keeping removal out is right. the poteto-mode swap to "copy the pstack-M.md block in step 6 exactly" is devin-only text replacing devin-only text, fine, and Refs #7 is right.
2. the step 2 re-validation sentences are not harness-specific and duplicate what upstream already does: step 3(c) marks "any real slug not in the detected set as needing a choice" and step 4 refuses to write one. that's upstream text, kept verbatim in this port. drop them (see line comment) and switch Closes #8 to Refs #8, with a note on #8 that 3(c)/4 already cover re-runs.
3. harness proof: missing. the comment shows devin auth status not logged in, so no devin plugins install / devin plugins list, and setup-pstack / poteto-mode were not exercised. need that before merge. Validate plugin was still running at review time.

non-blocking, separate pr: upstream setup-pstack now has an "offer a formal verification skill" step after the verification-skill offer; the port's setup-pstack ends at step 8 without it. check whether that's in an upstream release the port already claims.

[caelaxie]

drop "On a re-run, validate each existing role value ... inherit-parent and auto always pass." upstream step 2 has no such check because 3(c) already marks undetected real slugs as needing a choice and step 4 blocks writing them; both are in this file unchanged. adding it here is divergence for a case upstream already handles. keep the ~/.devin source-of-truth sentences.

[caelaxie]

harness proof

Real Devin CLI on a local box (no cloud agent, no git clone). PR head e61d7d9 (cursor/pstack-model-state-fixes-1c99), expected version 0.15.26 (from this branch's .devin-plugin/plugin.json).

• CLI: devin 3000.11.92 (7f4e64980e22)
• devin auth status → Logged in (via Devin). (Devin Pro, team membership Approved)
• scratch dir: /workspace/devin-harness/scratch
• model used by every run: swe-2-high

#	step	result
0	clean removal of the PR #10 install	✅ PASS
1	install pinned to the PR head sha (wrapper plugin)	✅ PASS
2	devin plugins list shows pstack v0.15.26	✅ PASS
2b	installed skill files match e61d7d9, not main	✅ PASS
3	/pstack:setup-pstack (describe-only)	✅ PASS (nothing written; ignored the ~/.cursor rule as current state)
4	/pstack:poteto-mode (short read-only prompt)	✅ PASS on the second try. The first try had a narrower allowlist and its find exec was rejected.

0. clean slate

$ devin plugins remove pstack-harness-pr10 --local
✓ Removed pstack-harness-pr10.
$ devin plugins remove pstack -y
✓ Removed pstack from your personal plugins.
$ devin plugins list
No plugins installed.
$ ls ~/.local/share/devin/cli/plugins/cache/*
ls: cannot access '/home/box/.local/share/devin/cli/plugins/cache/*': No such file or directory

1–2. install + list

devin plugins install has no owner/repo@branch syntax: it reads that form as a local path (see the #10 proof). So I pinned the sha through a local wrapper plugin:

$ cat /workspace/devin-harness/wrap-pr11/.devin-plugin/plugin.json
{ "name": "pstack-harness-pr11", "version": "0.0.0",
  "requiredPlugins": [ { "source": "github", "repo": "pstack-ports/devin-pstack",
                         "sha": "e61d7d9f20ac52efaf65dd7e60725870c7e7963b" } ] }
$ devin plugins install --local -y /workspace/devin-harness/wrap-pr11
  ...
✓ Installed pstack-harness-pr11.
  auto-installed required plugins: pstack
$ devin plugins list
Installed plugins

  • pstack-harness-pr11 v0.0.0
  • pstack v0.15.26 (required)

Content check: sha256 prefixes of the installed files vs raw.githubusercontent at e61d7d9 and at main:

skills/setup-pstack/SKILL.md installed=4e9fd877510d762c pr11=4e9fd877510d762c main=c0563aa8cc6ae693
skills/poteto-mode/SKILL.md  installed=b901a79dda039a35 pr11=b901a79dda039a35 main=e64a73ffe326f293

3. setup-pstack (describe-only)

Project allowlist used for both runs. Writes are denied, and I did not use dangerous/bypass:

{ "permissions": { "allow": ["Read(**)", "Exec(devin models)", "Exec(ls)", "Exec(cat)", "Exec(find)", "Exec(grep)", "Exec(head)", "Exec(sed -n)"],
                   "deny":  ["Write(**)", "Edit(**)"] } }

setup-pstack ran with the first four allow entries; find/grep/head/sed -n were added for the poteto-mode rerun.

$ devin -p --respect-workspace-trust false --export ../logs/pr11-setup.export -- '/pstack:setup-pstack DESCRIBE ONLY: do not write, edit, or create any files or config. Run step 1 (detect available models) and list what you detect, say what you treat as the current pstack model state and why, then briefly describe the remaining steps you would take.'
TOOL: skill {"skill": "setup-pstack"}
OBS:  Source: ~/.local/share/devin/cli/plugins/cache/github.com_pstack-ports_devin-pstack-816793bb/0.15.26/skills/setup-pstack/SKILL.md
TOOL: exec {"command": "devin models list"}
TOOL: exec {"command": "ls -la ~/.devin/rules/ 2>/dev/null; echo \"---\"; ls -la ~/.config/devin/agents/ 2>/dev/null"}

## 1. Detected models (`devin models list`)
54 families are available. The slugs relevant to the skill defaults are all present:
- **SWE-2**: `swe-2-medium`, `swe-2-high`, `swe-2-max` (plus `-lightning` variants of each)
- **Claude Opus 5.5**: `claude-opus-5-5-low` / `-medium` / `-high` / `-xhigh` / `-max` (plus `-fast` variants)
- **Adaptive**: `adaptive` ...

## 2. Current pstack model state
**There is no `~/.devin/rules/pstack-models.md`** (the `~/.devin/rules/` directory doesn't exist), so per the skill, the current state is the **skill defaults** ...
One caveat worth flagging: a `pstack-models.mdc` rule exists at `/home/box/.cursor/rules/pstack-models.mdc` and was injected into this session's context — it pins **every role to `inherit-parent`** ... The skill explicitly says config under other tool dirs is *not* current state, so I'd treat defaults as the baseline ...

## 3. Remaining steps I'd take (in a real run)
1. Ask for a budget ... 2. Apply the budget ... 3. Show the full role table and confirm ... 4. Validate ...
5. Write `~/.devin/rules/pstack-models.md` ... 6. Write profiles `~/.config/devin/agents/pstack-M.md` / `pstack-M-ro.md` ... 7. Confirm and optionally offer ...
exit=0
$ ls ~/.devin/rules ~/.config/devin/agents
ls: cannot access '/home/box/.devin/rules': No such file or directory
ls: cannot access '/home/box/.config/devin/agents': No such file or directory

This exercises the PR's change directly. The box has a real ~/.cursor/rules/pstack-models.mdc, and the CLI injects it into context. The skill still treated ~/.devin/rules/pstack-models.md as the only source of truth.

4. poteto-mode

The first try ran with the four-entry allowlist (no find/grep/head/sed -n), and its exec was rejected:

I'll quickly check the bundled playbooks to ground the answer.warning: rejected a tool call that requires confirmation. Running in non-interactive mode. Use --permission-mode dangerous to auto-approve all tools.
exit=0

The rerun used the full read-only allowlist above:

$ devin -p --respect-workspace-trust false --export ../logs/pr11-poteto.export -- '/pstack:poteto-mode read-only, no edits, no subagents: in 3 short lines, say which playbook you would pick for "fix a typo in a README" and what the done-check would be. Then stop.'
USER-MSG head: # Poteto mode | | Bundled skills live at `../<name>/SKILL.md` from this file, so put this file's absolute path in every `poteto-agent` prompt. | | ## Non-negotiables | ...

Playbook: Bug fix, since a typo is a small defect, though honestly it sits below the nontrivial threshold and could be done directly.
Done-check: read the README back and confirm the corrected spelling in place, then render or diff it once.
Nothing else applies. No tests, no subagents, just the verified edit.
exit=0

No code was changed and no secrets appear in this comment.

[caelaxie]

approved at e61d7d9 (posting as COMMENT since author and reviewer are the same account).

1. minimum changes: e61d7d9 removes the step 2 re-validation sentences. the diff is now two lines: the ~/.devin only-source-of-truth sentences in setup-pstack step 2 (#9, a devin harness adaptation) and the poteto-mode pointer to the step 6 pstack-M.md block (#7). everything else in step 2, 3(c), and 4 matches upstream f9be7aa word for word.
2. parity: this PR touches no version files. 0.15.26 in the proof is just the base it was cut from. #10 is now merged (c86c059, 0.15.27). its hunks are setup-pstack step 9, appended at the end, plus docs and manifests. none of them overlap this PR's setup-pstack step 2 line or its poteto-mode line. so the squash lands cleanly on top, main stays at 0.15.27, and nothing regresses.
3. harness proof (#11 (comment)): accepted. it starts from a clean slate with both earlier plugins removed and the cache empty. a wrapper's requiredPlugins pins the full head sha e61d7d9f…, and devin fetched pstack from github into its plugin cache, so this is a real install, not a symlink or subset. devin plugins list shows pstack v0.15.26. the sha256 of the installed setup-pstack and poteto-mode SKILL.md matches e61d7d9 and differs from main. authenticated /pstack:setup-pstack ran with a real ~/.cursor/rules/pstack-models.mdc injected into context and still treated defaults as current state, which exercises exactly this change. /pstack:poteto-mode loaded and answered.
4. Refs #8 (the re-check is dropped, and upstream 3(c)/4 cover re-runs), Closes #9 (the required ask is fully met, and stray removal is declined with a reason), Refs #7. all correct.

CI Validate plugin is green on e61d7d9, and the head has not moved past the proof sha. squash-merging pinned to e61d7d9f20ac52efaf65dd7e60725870c7e7963b.