diff --git a/ROADMAP.md b/ROADMAP.md
index 777cd555..c4e9fc08 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -6395,3 +6395,6 @@ Original filing (2026-04-18): the session emitted `SessionStart hook (completed)
 
 439. **Memory file discovery walks ALL ancestor directories up to `$HOME` boundary, silently loading any `CLAUDE.md` it finds — `/tmp/CLAUDE.md` left from a previous test silently bleeds into every project under `/tmp/*/`; no `--no-parent-memory` flag, no `.no-claude-md-boundary` marker file to limit discovery scope** — dogfooded 2026-05-11 by Jobdori on `f4a96740` in response to Clawhip pinpoint nudge at `1503335892461293675`. Reproduction: create three nested `CLAUDE.md` files with unique markers — `/tmp/claw-nested-probe/CLAUDE.md` (`PARENT_CLAUDE`), `subproj/CLAUDE.md` (`CHILD_CLAUDE`), `subproj/deep/CLAUDE.md` (`DEEP_CLAUDE`). Run `claw system-prompt --output-format json` from `subproj/deep/nest/` (note: `nest` has no `CLAUDE.md`). The `message` field contains **all three markers** (PARENT + CHILD + DEEP) and `status --output-format json` reports `memory_file_count: 3`. Boundary tests: (a) `$HOME/CLAUDE.md` is NOT picked up from `/tmp/no-claude-dir` (discovery stops at `$HOME` boundary, good); (b) From `/tmp/deep` (no nested CLAUDE.md), `/tmp/CLAUDE.md` IS picked up (count: 1); (c) git-root is NOT a discovery boundary — running from a git subdir still walks above the git root. **Ambient-context-bleed footgun:** any stale `/tmp/CLAUDE.md` (or `/home/<user>/projects/CLAUDE.md`, or any ancestor-path CLAUDE.md left over from a previous experiment, copy-paste, or AI-generated example) silently bleeds into every workspace nested below it. The user has no signal in `status --output-format json` indicating which ancestor file is contributing — only the aggregate `memory_file_count`. **Three required fixes:** (a) **expose discovery list**: `status --output-format json` and `system-prompt --output-format json` must include `memory_files:[{path, source:"workspace"|"ancestor"|"parent_dir"|"home", chars, contributes:bool}]` so users can see what's leaking in; (b) **add `--no-parent-memory` flag** to limit discovery to cwd only (no ancestor walk), or add a boundary marker (`.claude-no-walk`, `.claw-root`, or honor `.git` as the boundary by default — most users expect repo-root scope); (c) **`doctor` warns** when ancestor `CLAUDE.md` files are loaded from outside the current git repo (suggests they may be unintentional). **Sibling discovery scope question:** discovery walks up to `$HOME` — but for a user with a project at `/Users/foo/work/proj`, that's `/Users/foo/work/CLAUDE.md` + `/Users/foo/CLAUDE.md` (if it exists) both load. The home boundary is exclusive, but the entire `/Users/foo` tree under home is in scope. **Why this matters:** test workspaces, scratch dirs, AI-generated example projects, and shared `/tmp` workdirs are full of stale `CLAUDE.md` files. The current discovery rule means every claw invocation can silently inherit context from arbitrary ancestor paths. Cross-references #438 (memory discovery only finds CLAUDE.md, not AGENTS.md or CLAW.md), #421 (cwd canonicalization leak — the canonicalized form determines which ancestor walk path is used). Source: Jobdori live dogfood, `f4a96740`, 2026-05-11.
 
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+440. **One invalid `mcpServers` entry blocks ALL OTHER valid MCP servers from loading — `mcp list --output-format json` returns `configured_servers: 0, servers: []` when even one server has a missing/invalid `command` field, despite other servers in the same config being well-formed; sibling: config parser halts on first invalid entry, never reports the remaining invalid entries** — dogfooded 2026-05-11 by Jobdori on `bd126905` in response to Clawhip pinpoint nudge at `1503343442904879156`. Reproduction: write `.claw.json` containing six `mcpServers` entries — one valid (`valid-server: {command:"/bin/echo", args:["hello"]}`) and five with progressive defects (missing-command, empty-command, null-command, wrong-type-command, extra-unknown-field). Run `claw mcp list --output-format json` → `{"action":"list","config_load_error":"/private/tmp/claw-mcp-probe/.claw.json: mcpServers.missing-command-server: missing string field command","configured_servers":0,"kind":"mcp","servers":[],"status":"degraded"}`. The error mentions only `missing-command-server` (the first invalid entry in JSON-object iteration order); the other four invalid entries are never surfaced. The valid `valid-server` entry is silently dropped because the parser bails on the first error. `status --output-format json` correctly propagates the same `config_load_error` and sets `status:"degraded"`, but no field tells automation which servers are valid vs broken — `servers:[]` is the only signal. **Three problems compounded:** (a) **all-or-nothing loading**: ROADMAP product principle #5 says "partial success is first-class," but mcp config loading is binary. One bad server kills the entire MCP plane; (b) **first-error-only reporting**: a `.claw.json` with five invalid entries surfaces only one error message — the user fixes that one and runs again, gets the next error, and so on. Five iterations needed to discover all errors; (c) **no per-server status**: even with the partial-success fix, the JSON envelope needs `servers:[{name, valid:bool, error?, command?, args?}]` so automation can see which entries are usable. **Required fix shape:** (a) the MCP config parser must collect ALL invalid entries into an `invalid_servers:[{name, error_field, reason}]` array and load all valid ones into `servers:[]`; do not abort on first error; (b) `configured_servers` reflects the count of *valid* loaded servers (not zero) when there are valid entries alongside invalid ones; (c) expose `total_configured:int` (count of entries in source `.claw.json`) AND `valid_count:int` (loaded), AND `invalid_count:int` (rejected) — three distinct counts; (d) `doctor --output-format json` adds an `mcp_validation` check that lists each invalid entry with its error message; (e) regression test: `.claw.json` with one valid + one invalid entry results in `configured_servers: 1, invalid_servers: [{name:"...", reason:"..."}]`. **Why this matters:** users iterate on MCP server lists during onboarding — one typo kills the entire plane, including servers they got working previously. The first-error-only reporting forces N iterations through N invalid entries instead of a single fix-everything-at-once pass. Cross-references #407 (config files no load_error per-file), #415 (config section merged_keys count only), #416 (plugins list prose), #428 (default permission mode), and Product Principle #5. Source: Jobdori live dogfood, `bd126905`, 2026-05-11.
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