fleetd/CLAUDE.md

# claude-bridge — project instructions

## Bridge communication (enforced — read this first)

> **Canonical block.** Everything down to §Layering is the portable bridge charter, copied verbatim
> into every project that mounts the bridge MCP. Keep it byte-identical with the template in the
> wiki ([Use Cases](https://git.ltms.dev/fleet/fleetd/wiki/7-Use-Cases) → *The portable
> CLAUDE.md block*); improvements go to the template first, then out to each project. Anything
> specific to *this* repo lives under §Project addendum below, never inline above it.

If no `fleet_*` MCP tools are mounted in this session, this section does not apply — skip it.

`fleetd` is the **sole communication gateway** between agents here. The orchestrating session (the
**primary**) and every delegated peer (a **member**) mount the *same* MCP server and talk only
through its `fleet_*` tools. No session addresses a peer, a broker, or the network directly.

### Which role am I? — settle this before acting

**Every role reads this file.** A member runs in a git worktree of this same repo, so it inherits
this `CLAUDE.md` verbatim, and every rule below is role-conditional.

**Call `fleet_whoami`.** It returns `primary`, `worker`, or `architect`, resolved by the daemon from
your connection — unforgeable, and the same resolution its authorization gate uses. A worker also
carries its `sessionId`, `profile`, `worktree` and `branch`; an architect carries the slot name it
was bound to. Don't infer what you can ask.

Only if that call is unavailable, fall back to these — each is one-way, so keep reading until one
fires: the reply charter in your system prompt (*"You are a spawned member in the
claude-bridge fleet"*) ⇒ **spawned member**; fleet tools prefixed `mcp__fleet__*` ⇒ **spawned
member** (the launcher fixes that mount name; a primary's mount is named by whoever wrote its
`.mcp.json`, so it varies — and a member spawned before CB-632 still says `mcp__bridge__*`); `ANTHROPIC_BASE_URL` set ⇒ **spawned member** (Claude-model members run
on a clean env, so its *absence* proves nothing). None of these separate a worker from an architect —
only `fleet_whoami` does. **Still unsure ⇒ act as a worker**, the most restricted member role. The
two mistakes are not symmetric: a primary acting as a worker is refused by the authorization gate —
loud and self-correcting — while a member acting as the primary ends its turn with no `fleet_reply`,
and the sender silently receives nothing. Fail toward the recoverable error.

### Invariants — both roles, no exceptions

1. **Never set, export, or forward `ANTHROPIC_BASE_URL`** (or `ANTHROPIC_AUTH_TOKEN`). The primary
   stays on subscription; only the bridge puts a member off it, at spawn. Mounting the bridge must
   never move a session across that boundary.
2. **The bridge is the only channel.** Text you print in your terminal reaches nobody — the other
   side cannot see your screen. An answer that isn't in a `fleet_*` call is silently discarded.
3. **Identity comes from the connection, never an argument.** Workers never pass a target; you
   cannot act as another session. Spawn/stop/drain are lead-only; **send is lead or architect**;
   reply/ask are only-as-itself — any peer may answer for its own pane, and for no other. A call
   outside your role is refused, not queued.
4. **Delivery is status-gated: one message per turn.** Don't busy-poll a peer's terminal and don't
   re-send because a call looks slow — the bridge delivers when the peer is `idle`, `blocked` or
   `done`. A spawned member must **also** have mounted the bridge MCP: until it has, it is not
   deliverable, and a send waits on that gate for ~60s and then fails without ever reaching its pane.
5. **Never drive the terminal multiplexer directly** (no `herdr` CLI, no socket). The bridge owns
   policy; the multiplexer owns PTYs. Going around the bridge bypasses every rule above.

### Primary (lead) — run this on every task, in order

**Delegate by default — that is the job.** With the bridge mounted you are an orchestrator on a
metered subscription, and workers are cheap, parallel, and disposable. The default answer to "who
does this?" is **a worker**, not you. Reach for `fleet_send` before you reach for `Edit`. The steps
below are the procedure — run them in order, every task, not only the big ones.

0. **Know your role** — `fleet_whoami`, once per session, before anything else.
1. **Split.** Write the unit list. Every unit carries: scope · the files or PR in question ·
   acceptance criteria · exactly what to report back. A unit with no acceptance criteria is not
   ready to delegate — refine it or keep it.
2. **Gate each unit** on one question: **"can I write a brief good enough for a worker to
   succeed?"** — *not* "could I do this faster myself?" (usually you could; doing it yourself costs
   your context and your subscription, while a wasted worker turn costs a worker turn). Yes ⇒
   delegate. The keep-list is closed: the conversation with the user, decomposition and planning,
   the final judgment call, verification, merges, and anything that depends on context only you
   hold. Nothing else is yours by default.
3. **Spawn every delegated unit first** — `fleet_spawn{profile, worktree:true, ticket}`, one per
   unit, *before* sending any. Pass `profile` explicitly: profiles differ in model and cost, not in
   tier, so the default is rarely what you want.
4. **Then send them all** — `fleet_send{sessionId, content, wait:false}`. Line 1 of every brief is
   `Load the <name> skill.` naming the worker's playbook; those skills are opt-in and that line is
   what makes them reliable. Where the project ships no such skill, spell the procedure out in the
   brief instead. The brief is self-contained — the worker sees your message and the repo, nothing
   of your context, your plan, or your screen.
5. **Collect** — `fleet_poll{ticket}` → `fleet_ack{target, msgId}`. Answer a worker's `fleet_ask`
   with `fleet_send{turnId, content}` — **not** `sessionId`. A worker gone quiet is diagnosed with
   `fleet_status`, never by reading its terminal; it also reports an open question and the `turnId`
   that answers it. **A worker's ask waits ~55 seconds, and no nudge makes that longer** — so never
   brief a worker to "ask me". Decide before you delegate, or give it an explicit default.
6. **Verify yourself.** Re-run the build and the checks. A worker cannot run your IDE tooling, any
   forge tools it appears to have hold a blocked credential and fail, and a piped command
   (`… | tail`) hides failures behind a zero exit — never promote a worker's "clean" to a fact.
7. **Review — fan out.** Spawn reviewers against the diff, one per dimension or per file, with
   `wait:false`. Never the implementer of the scope it reviews, and brief them from the diff — not
   from the implementer's rationale, which carries its own blind spot. Dispatch each PR's reviewers
   as it lands; don't wait for the last implementer. Under ~50 changed lines, skip the fan-out and
   read it yourself.
8. **Adjudicate, merge, tear down — yours alone.** Read the diff yourself: fully if it is small,
   targeted at the reported findings and the risky paths if it is large. Reviewer findings direct
   your attention; they never substitute for it. Then merge, then `fleet_stop{paneId}`.

**Steps 3 and 4 are separate on purpose** — spawning and sending in one loop is how parallel work
silently becomes serial, and it is the most common way this layer is wasted. For the same reason,
prefer `wait:false` + `fleet_poll` for anything non-trivial: a blocking `fleet_send` is capped by
*your own* MCP client call timeout (~60s), well below the task's real runtime.

**Delegating does not delegate responsibility.** Workers open PRs; you are the gate. Never delegate
the merge — and merging on a reviewer's word is delegating it by proxy.

| Intent | Tool |
|---|---|
| Confirm your own role | `fleet_whoami` |
| See backends available | `fleet_profiles` |
| Start a member | `fleet_spawn{role?, profile?, cwd?, worktree?, ticket?, sessionName?, resumeSessionId?}` → `sessionId` + `paneId` |
| See the fleet | `fleet_list` → `leads` (your peers) + `members` (each carries `agentSessionId` when its backend knows one) · one peer's state: `fleet_status{sessionId}` |
| Delegate (blocking) | `fleet_send{sessionId, content}` |
| Delegate (long task) | `fleet_send{sessionId, content, wait:false}` → ticket → `fleet_poll{ticket}` |
| Answer a member's `fleet_ask` | `fleet_send{turnId, content}` — **not** `sessionId` |
| Message a **peer lead** on this host | `fleet_send{sessionId: <their terminal>, content}` — `fleet_list` → `leads` reports it. Coordination only, **never** a task |
| Message a **peer lead** on another daemon or host | `fleet_send{coordId: <their coord-id>, content}` — needs a `coordinator:` block; your own coord-id is in `fleet_list`. Coordination only, **never** a task |
| Answer a peer lead that messaged you | `fleet_reply{content}` — the one case a lead replies |
| Collect a held reply | `fleet_poll{target}` · then `fleet_ack{target, msgId}` |
| Tear down a member | `fleet_stop{paneId}` |

### Lead ↔ lead — coordinate, never delegate

`fleet_list` returns `leads` alongside `members`; your own row carries `self: true`. Every other row
is a peer — an orchestrator with its own context, its own members, and its own judgment. An empty
`members` array means no members are spawned; it says nothing about peers.

**A lead never assigns a task to another lead.** Work goes to members — only ever downward, never
sideways. Sending a peer a brief with acceptance criteria is a category error: a brief is a member's
artefact, and a peer is not yours to task. If a unit needs doing and it falls in your area, spawn a
member and delegate it yourself; if it falls in the peer's area, say so and let the peer assign it.
The traffic between leads is coordination and nothing else:

1. **Divide the map, not the work.** Agree who owns which area, then each of you assigns inside your
   own. Split by **context ownership** — whoever already holds the context owns that area — and say
   who takes what, in one message, before either of you starts. Two leads silently working the same
   unit is the failure mode here, and neither notices until the merge.
2. **Share findings, hazards, and corrections.** What you have already discovered, what broke, what
   the next person will trip on. This is the traffic that actually pays for the channel: it costs one
   message and saves a peer a rediscovery.
3. **Verify a peer exactly as you verify yourself.** Peer status buys nothing: check the claim
   against the code, and re-run the build. A peer's correction gets the same treatment — right or
   wrong on the evidence, not on who said it. Neither of you merges the other's work unreviewed.

Being messaged by a peer does not make you its worker: answer with `fleet_reply`, and push back on
the substance if it is wrong. A peer that simply complies has thrown away the reason there are two of
you.

### Member (worker or architect) — the turn contract

1. **Load the playbook skill the lead named** before doing anything else.
2. **Do the assigned scope only.** Note anything you spot outside it in one line; don't go hunt it.
3. **`fleet_ask{question}`** when a decision is genuinely the lead's (ambiguous requirement, two
   defensible fixes, "bug or intended?"). It blocks and you resume the *same* turn with the answer.
   Don't ask what you could decide yourself.
4. **End the turn with exactly one `fleet_reply{content}`**, carrying your complete answer. This is
   the whole handoff. No `fleet_reply` ⇒ the sender gets nothing and the exchange stalls.
   Do **not** lean on the completion fallback to carry your answer for you: when you end a turn
   without replying, the bridge scrapes your pane, and it can return only the last 4000 characters.
   A clipped scrape is marked as partial, but the missing text is gone — your report reaches the
   lead with its end cut off.
5. **Report honestly.** State only what you actually ran and its real output, including failures,
   and never claim the result of a check you had no way to run. **Measure your own tools; do not
   assume them.** What you mount depends on your backend: an opencode member gets the bridge and
   nothing else, while a Claude Code member also inherits the operator's user-scope MCP servers,
   which the bridge never chose for you. Two rules follow. The primary's IDE tooling is still not
   yours, whatever you see. And **a mounted tool is not a working tool** — the forge server you may
   find there holds a deliberately blocked credential and fails every call, by design.
6. **Never merge.** Stage files explicitly — never `git add -A` — and leave alone anything the
   project marks as not-yours-to-commit.

### Where each rule lives (don't duplicate — extend the right layer)

| Layer | Scope | Reaches |
|---|---|---|
| the launcher's reply charter | the one rule that must survive with no repo: *end every turn with `fleet_reply`* | every spawned member, at launch, every peer kind — never a lead |
| **this section** | protocol + orchestration policy | primary **and** every member that reads the repo — tracked in git, so worktrees inherit it |
| role agent definition files | role contract and per-job procedure | a member whose launcher binds its role to the matching file in its worktree |
| role playbook skills | per-job procedure (commit/PR recipe, finding format) | a member told to load one |
| the bridge's own docs | design detail, flows, error model | on demand |

A rule belongs in **exactly one** layer — the outermost one that must obey it. A member without a
repo checkout still gets the launcher's reply charter, which is why that one rule stays there.
Peers that don't read `CLAUDE.md` (non-Claude adapters) get the charter only, so any rule *they*
must obey belongs in the charter, not here.

## Project addendum — claude-bridge (not part of the canonical block)

- **This repo is the bridge.** The daemon is `fleetd`, its MCP mount is `http://127.0.0.1:8765/mcp`,
  and the code behind the rules above is `mcp/FleetMcp` (tools), `auth/Authz` (the role table),
  `mcp/ConnectionIdentity` (connection→role), and `worker/*Launcher` (`REPLY_CHARTER`).
- **`fleet_profiles`/`fleet_list` report two separate outage states, and they are not the same
  thing.** *Quarantined* (CB-578) means the backend told us it is out of capacity — a long,
  1800s-default cooldown. *Cooling off* (fleetd #201/#227) means a profile's credential threw two
  distinct backend errors (a non-exhaustion failure such as an HTTP 5xx) within 60 seconds — a
  short, fixed 60s cooldown, not configurable per profile. Each check runs independently, so a
  profile can show both at once. In the JSON: a cooling profile carries `credentialId` and
  `coolingOffForSeconds`; a quarantined profile carries `quarantinedForSeconds`; a profile hit by
  both carries all three fields, and either state alone already sets that profile's `free` to `0`.
  A `fleet_spawn` naming a cooling-off profile is refused before it ever reaches the backend
  adapter, with a message naming the credential and the remaining seconds ("cooling off after
  repeated backend errors") — distinct wording from a quarantine refusal, so don't conflate the
  two when reading a spawn failure.
- **Skills available to delegate:** `implementer` (worktree → commit → push → own PR),
  `reviewer` (one diff → one structured finding) and `hunter` (sweep a package → several ranked
  findings, change nothing). Name exactly one in every delegation. **`reviewer` and `hunter` are
  not interchangeable** — `reviewer` caps the answer at one finding in about 90 words, so naming
  it for a multi-finding sweep hands the worker two contradictory output contracts. That has
  already cost three workers' turns: each wrote a good report to its terminal and ended the turn
  with no `fleet_reply`, and the scrape returned the tail of the brief instead.
- **Primary-side skills** (not delegation playbooks — a worker cannot use them):
  `port-to-opencode` (make an OpenCode session a participant in this workspace) and
  `fleets-status` (report every fleet that shares one LavinMQ instance).
- **This repo is also a Claude Code marketplace, and ships a plugin.** `.claude-plugin/marketplace.json`
  points at `plugin/`, which carries the MCP mount and the `setup` skill
  (`/claude-bridge:setup` — make any project bridge-ready). It was added in CB-527 and then went
  unmentioned by every instruction file, so it drifted and a later session planned it from scratch
  (#362). **Read `plugin/` before designing anything about onboarding a project.** Two limits are
  structural, not bugs: a plugin cannot carry the role agent files, because
  `ClaudeCodeLauncher.java:371` requires `<cwd>/.claude/agents/<role>.md` in the member's own
  worktree; and a plugin cannot deliver anything to members at all, because
  `ClaudeCodeLauncher.java:285` exports `CLAUDE_CONFIG_DIR` and every Claude profile here sets it,
  so a member never reads the operator's plugin store. **The plugin is the lead-side surface;
  member-facing assets travel in the worktree.**
- **Never commit** `.mcp.json` (the primary's local copy, flagged `--skip-worktree`) or `wiki/`
  (a submodule with its own remote).
- **A provisioned worktree neutralizes `.mcp.json`, `opencode.json` and `.autoenv`** — the repo's
  committed copies would otherwise mount the primary's IDE and forge servers (fleetd #134). The
  worktree's copy of each is a stub, **not** the repo's real file, so a worker that reads one and
  reports what it found is reporting on the stub. The daemon logs a per-spawn summary, but the
  worker cannot see that log. From inside its own worktree a worker — or a lead debugging one —
  reads the list with `git config --worktree --get-all fleet.neutralizedConfig`, and the
  consequence with `git config --worktree --get fleet.neutralizedConfigNote`. Never brief a worker
  to edit one of these files: the edit cannot be committed, and it will not tell you so.
- **Flows and the error model** — rendezvous, `fleet_ask`, detached delivery, the turn-done
  fallback and status gating — are diagrammed in `docs/MCP-Contract.md`. That page is now flows
  only: its pre-build tool catalogue, parameter tables and REST paths were deleted rather than
  corrected, because a hand-maintained second copy of the tool surface is what drifted for a month
  while this line pointed every session at it (CB-609 / #114). **The live MCP schema is the tool
  reference**, with the intent→tool table above as the short form. `McpContractDocTest` fails if
  that page names a `fleet_*` tool the server does not register. The flows are kept out of this
  file because this file loads into every session's context.

### Redeploying the daemon — the lead may do this (primary only)

**A merge is not a deployment.** The running `fleetd` holds the jar it was started with, so a
feature merged to `main` does nothing until the daemon is rebuilt and restarted. Saying "shipped"
about code the live daemon has never loaded is a false report. The lead **may and should** redeploy
rather than hand the job back to the operator.

Workers must never do this. A worker has no business restarting the daemon it is talking through,
and stopping it kills the worker's own channel mid-turn.

**Use the script — do not hand-roll the steps.**

```bash
scripts/redeploy-fleetd.sh --check   # report state, change nothing
scripts/redeploy-fleetd.sh           # build, confirm drain, restart, verify
scripts/redeploy-fleetd.sh --yes     # skip the drain prompt (fleet already checked)
```

It builds before it stops anything, so a failed build never leaves the fleet down; it waits for the
old process to exit rather than assuming; it polls `/healthz`; and it anchors its log checks to a
line marker taken before the restart, so old errors cannot be misread as new ones. Run `--check`
first — it is read-only and reports whether the forge token resolves, which nothing else tells you.

The script encodes the five things below, each of which has gone wrong here before. Read them anyway:
if the script is unavailable or a step fails, this is what it was protecting you from.

1. **Login shell, or workers silently lose their forge token.** The daemon inherits
   `WORKER_GITEA_TOKEN` from the shell that starts it, and that comes from
   `${SHARED_ENV}/tools/secrets.sh`. Start it from a non-login shell and the variable is empty, the
   daemon starts fine, and the failure appears much later as workers that cannot open a PR. Nothing
   logs this at startup — the script's `--check` is the only thing that reports it, and it checks
   whether the name resolves without ever printing the value.
2. **Drain live members first.** `fleet_list`, then `fleet_stop` each member, and collect anything
   you still want with `fleet_poll` before you kill anything. A restart drops in-flight tickets and
   rendezvous, and a member's report is not recoverable once its ticket is gone.
3. **A restart is the only way deferred config keys take effect.** That is usually the reason to do
   it. The startup log names which keys it accepted and which it deferred — read those lines rather
   than assuming.
4. **Re-check identity afterwards.** Call `fleet_whoami` and confirm it still answers `primary`. The
   lead is found by its tab label (`fleet.leaders.*.tab`), and a lead whose tab no longer matches is
   demoted to worker, which refuses every orchestration call.
5. **Prove the new jar is the one running.** Confirm a *fresh* `fleetd listening` line at the end of
   `fleetd/fleetd.out`, dated after the restart. An old daemon that never died looks identical from
   the outside.

**Permission.** A `CLAUDE.md` rule grants intent, not tool permission — the command classifier
refuses a bare `kill` on the daemon whatever this file says. The script is the seam that fixes that:
it is one auditable command, so the operator allow-lists it once instead of approving a stop and a
start every time. The rule lives in the operator's Claude Code settings:

```json
{ "permissions": { "allow": ["Bash(scripts/redeploy-fleetd.sh:*)"] } }
```

Granted by the operator on 2026-08-15. If a call is still refused, do **not** route around it by
running the stop and start as separate commands — that is exactly the approval the script replaced.
Say what you were going to run and why, and let the operator decide.

### The prompt is part of the product — update it with the code (mandatory)

This repo *is* the bridge, so the canonical block above is not documentation about someone else's
system: it is the instruction surface this codebase ships. **Every change here must end by asking
whether the block still tells the truth.** A code change that silently invalidates it is an
incomplete change — the agents reading it have no other source.

Before you call any work done, check the row that matches what you touched:

| You changed… | Re-read and update… |
|---|---|
| a `fleet_*` tool — added, removed, renamed, or its params/semantics | the primary's intent→tool table; any rule that names that tool |
| `Authz` / the role table | invariant 3, and the primary-only vs worker-only claims |
| `ConnectionIdentity` / how a caller is resolved | the `fleet_whoami` paragraph and the fallback ladder |
| `REPLY_CHARTER`, or a launcher's mount/flags | the fallback ladder (`mcp__fleet__*`), and the layering table's top row |
| the injector / status gating | invariant 4 |
| worktree provisioning or the parity overlay | the "both roles read this file" premise — it rests on the worker's worktree being a checkout of this repo |
| `.claude/skills/**` | the addendum's skill list, and the "name the playbook" rule |
| a new peer kind (non-Claude adapter) | what that peer can read — anything it must obey belongs in its charter, not in the block |
| **anything an operator can use, configure, or observe** — an MCP tool, a `fleetd.yaml` knob, an endpoint, a visible behaviour | **[Features](wiki/11-Features.md)** — one entry: what it does · the knob that turns it on · **why it exists** · the gotcha |

That last row is not bookkeeping. Chapters 1–10 answer *how is this built* and *why this way*;
none of them has a home for *what can it do and how do I turn it on*, so for twenty tickets a
shipped capability landed nowhere and the Roadmap went on claiming the stage was finished. The
*why* line is the one that matters — without it a decision gets re-litigated from scratch a month
later. Internal contract changes go to `wiki/9-Implementation.md` instead; test and coverage work
is a Roadmap line. A change that touches none of the three earns no entry, and that is a normal
outcome rather than an omission.

Then **propagate**: the block in this file and the template in the wiki
([Use Cases](https://git.ltms.dev/fleet/fleetd/wiki/7-Use-Cases) → *The portable `CLAUDE.md`
block*) must stay byte-identical, and other projects carrying the block need the same edit. Verify
rather than trust:

```bash
python3 - <<'PY'
import pathlib
c = pathlib.Path("CLAUDE.md").read_text()
w = pathlib.Path("wiki/7-Use-Cases.md").read_text()
S, E = "## Bridge communication (enforced", "## Project addendum — claude-bridge"
block = c[c.index(S):c.index(E)].rstrip() + "\n"
i = w.index("```markdown\n") + len("```markdown\n")
print("in sync:", w[i:w.index("\n```\n", i) + 1] == block)
PY
```

## IDE MCP tools & validation workflow (enforced)

> **Primary only.** Workers have no IDE MCP mount — if you are a worker, skip this section and
> report the build/test output you actually ran (see §Bridge communication → Worker).

Two IDE MCP servers are connected: **intellij-index** (semantic code intelligence) and
**jetbrains** (file problems, reformat, debugger). IntelliJ has multiple projects open; our
module is **`fleetd`**. Always pass these to IDE MCP tools:

- `project_path` = `/Users/dai.ha/LTMS/claude-bridge/fleetd`
- IDE paths are relative to `fleetd/` (e.g. `src/main/java/dev/ltms/fleet/...`)

### After editing any file — mandatory

1. **`ide_sync_files{paths}`** — the built-in Edit/Write tools write to disk; the IDE index is
   stale until synced, or IDE nav/refactor/diagnostics give wrong results.
2. **`ide_diagnostics{file}`** (or `jetbrains get_file_problems`) — clear **all** errors *and*
   warnings. IDE inspections catch what a build won't (unused params/fields, redundant
   modifiers, resource leaks, "always same arg", …). These diagnostics are **per-file**.
3. **`mvn clean install`** (Bash) — required for **overall project health** (clean build + full
   test run). A per-file-clean file can still break the build or another module. This is the
   whole-project gate before declaring work done or committing.

**Whenever dependencies change (or a `pom.xml` edit), validate CVEs with
`jetbrains get_file_problems{filePath: "fleetd/pom.xml"}`** — its Mend.io check reflects the
dependencies on disk. (Note: `ide_diagnostics` / intellij-index does NOT re-resolve dependencies
after a pom edit without a full Maven reimport, so it reports stale CVE results — don't trust it
for this.) Treat a CVE warning like any other: bump to a patched version and confirm
`mvn clean install` still passes. If the latest available version is still flagged (EOL line,
"insufficient information", or config-file-only advisories), document it as accepted in the pom
rather than chasing a fix that doesn't exist.

### Use IDE MCP tools for navigation, refactoring, and diagnostics only

- **Navigate (prefer over Grep/Read for symbols):** `ide_find_definition`, `ide_find_class`,
  `ide_find_file`, `ide_find_references`, `ide_find_implementations`, `ide_find_super_methods`,
  `ide_call_hierarchy`, `ide_type_hierarchy`, `ide_search_text` (regex: `jetbrains
  search_in_files_by_regex`).
- **Refactor (prefer over multi-file Edit / rm / mv):** `ide_refactor_rename` (position-based,
  updates all refs/overrides/tests), `ide_refactor_safe_delete`, `ide_move_file`,
  `jetbrains reformat_file`.
- **Diagnose:** `ide_diagnostics` / `jetbrains get_file_problems`.

### Do NOT route build/test/one-offs through the IDE

Keep `mvn` (compile/test/package/`clean install`) and **all** one-off shell commands on **Bash**.
Do not use `jetbrains build_project`, `execute_run_configuration`, or `execute_terminal_command`
to replace them.

### Java 25 notes

Prefer the unnamed lambda parameter `_` for required-but-unused params; a non-public
`static void main(String[])` is valid (JEP 512) and boots via `java -jar`.