diff --git a/.Rbuildignore b/.Rbuildignore
index ad336ed..f3eeda4 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -30,3 +30,5 @@ readmeplot
 ^_pkgdown\.yml$
 ^docs$
 ^pkgdown$
+^pm$
+^\.roborev\.toml$
diff --git a/.gitignore b/.gitignore
index 55cc2f8..ffe57b7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,4 @@ NUL
 *.tar.gz
 .claude/
 Rplots.pdf
+.compass-cache/
diff --git a/pm/JOURNAL.md b/pm/JOURNAL.md
new file mode 100644
index 0000000..ead386b
--- /dev/null
+++ b/pm/JOURNAL.md
@@ -0,0 +1,20 @@
+# Project journal
+
+Append-only, newest first. **Entries are never edited** — the value of this file is
+that it records what was believed at the time, including the parts that turned out
+wrong. Where things stand *today* is in `STATUS.md`, which is generated.
+
+Four lines per entry. The analysis belongs in the issue or the decision record; this
+file carries the reasoning and the pointers.
+
+- **Why** — the driver. The one line git cannot reconstruct later.
+- **Obligates** — issues this change created elsewhere. Numbers, not prose.
+- **Refs** — commits, issues, decision records.
+
+---
+
+## 2026-11-06 · quality · compass adopted
+
+**Why:** merTools is GitHub-only, and it is the first repository compass manages there. It is in maintenance after 1.0.0, so reviews stay off to keep it out of the local review queue.
+**Obligates:** nothing filed. `TODO.md` is left as it was, from the 1.0.0 submission.
+**Refs:** #138, #139 (setup test issues, closed), #140 (board)
diff --git a/pm/STATUS.md b/pm/STATUS.md
new file mode 100644
index 0000000..ebea2bd
--- /dev/null
+++ b/pm/STATUS.md
@@ -0,0 +1,48 @@
+# Project status
+
+> Between the compass markers is generated. Edit the sources, not this.
+
+<!-- compass:begin -->
+<!-- compass:board -->
+
+## Where this stands
+
+merTools is in maintenance after its 1.0.0 release, and compass tracks its work from here. Nothing is open. Reviews are off for this repository, and `TODO.md` is kept as the record of the 1.0.0 submission.
+
+## Ready to work on next
+
+_Nothing is open and unblocked._
+
+## Workstreams
+
+| Stream | Commits since | Open | Debt | Owes docs |
+|---|---|---|---|---|
+| Package code | 230 | 0 | 0 | no |
+| Vignettes and site | 77 | 0 | 0 | no |
+| Tests and checks | 156 | 0 | 0 | no |
+
+## Phases
+
+| Phase | Progress | Due |
+|---|---|---|
+| 1.1 | `██████████` 100% (6/6) | — |
+| 1.0 | `██████████` 100% (10/10) | — |
+
+## CI
+
+![R-CMD-check](https://github.com/jknowles/merTools/workflows/R-CMD-check/badge.svg)
+![pkgdown](https://github.com/jknowles/merTools/workflows/pkgdown/badge.svg)
+![pages-build-deployment](https://github.com/jknowles/merTools/actions/workflows/pages/pages-build-deployment/badge.svg)
+
+<details>
+<summary>Dependency graph and detail</summary>
+
+_Nothing blocks anything else, so there is no graph to draw._
+
+- Marker: `none` (no journal entry yet)
+- Commits since: 366
+- Open issues: 0
+
+</details>
+
+<!-- compass:end -->
diff --git a/pm/compass.toml b/pm/compass.toml
new file mode 100644
index 0000000..df6d5fe
--- /dev/null
+++ b/pm/compass.toml
@@ -0,0 +1,24 @@
+[project]
+name  = "merTools"
+forge = "jknowles/merTools"
+
+[[workstream]]
+id    = "package"
+title = "Package code"
+paths = ["R/*", "src/*", "DESCRIPTION", "NAMESPACE"]
+docs  = ["man/*", "NEWS.md"]
+
+[[workstream]]
+id    = "docs"
+title = "Vignettes and site"
+paths = ["vignettes/*", "README.Rmd", "_pkgdown.yml"]
+docs  = ["README.md"]
+
+[[workstream]]
+id    = "quality"
+title = "Tests and checks"
+paths = ["tests/**", ".github/workflows/*"]
+docs  = []
+
+[roborev]
+enabled = false
diff --git a/pm/decisions/README.md b/pm/decisions/README.md
new file mode 100644
index 0000000..3eec285
--- /dev/null
+++ b/pm/decisions/README.md
@@ -0,0 +1,13 @@
+# Decisions
+
+One file per decision, numbered and immutable. A decision that changes is superseded
+by a new record, never edited in place — the old reasoning is the point. The records
+follow [DADR 0.1.0-alpha.3](https://vincentarelbundock.github.io/dadr/specification/).
+
+The table below is **generated** by `compass:decide`. Do not hand-edit it.
+
+<!-- compass:begin decisions -->
+| # | Date | Decision | Status |
+|---|---|---|---|
+| — | — | *No decisions recorded yet.* | — |
+<!-- compass:end decisions -->